Mobile Health and Telemedicine App Test Drive

I began to virtualize the way I manage my health several years back with the launch of ZocDoc, which provides an online system to locate and schedule appointments with doctors (similar to the way we use OpenTable for restaurant reservations). Flash forward to today, and my functional medicine doctor lives almost 2000 miles away. We keep in regular contact through email and set up monthly 30 minute consults over Skype (we do meet face-to-face at least once a year). He has access to all of my lab data in addition to other QS-related data I provide (there’s a misconception that the quantified self movement is “anti-doctor”, which is not the case – the issue is finding the right doctor(s)).

But things are just getting started. A number of mobile health/telemedicine-related technologies are coming to market that will continue to disrupt healthcare – by not just saving time and money, but potentially saving lives and allowing patients to have access to the best doctors regardless of geography. Dr. Eric Topol talks about the impending democratization of health care based 8 key consumer drivers: sensors, labs, imaging, physical exams, access to medical records, transparency of costs, and digital pills.

Here are a few examples of mobile health apps I have recently used:

AliveCor ECG

An FDA-approved ECG/EKG (Electrocardiogram) device that fits in your pocket and only costs $149? AliveCor is a product that snaps over your smartphone (so doubles as a nice protective case) and has 2 sensors you touch with your fingers to transmit your heart data to the AliveCor mobile app.

AliveCor ECG

After 30 seconds you can see a readout of your ECG (cool!) along with your pulse rate and are alerted if any atrial fibrillation was detected. Several options are then given to submit for further analysis. I decided to “splurge” and chose the option to have a clinical analysis and report done by a US Board Certified Cardiologist in 24 hours for $12USD. I entered my credit card info and within 8 hours I had received my analysis:

AliveCor Results

I was given a clean bill of (heart) health, but for someone with an existing heart condition, this can be a game changer – normally, when an individual encounters an “episode” (such as irregular heartbeat), they rush to an emergency room but by the time they have an ECG done their episode has passed, and their ECG will look normal. Now, all they need to do is pick up their phone and they can record the episode as it happens. I already have several friends who have purchased this device for their elderly parents.


FirstDerm is an app that allows you to anonymously submit photos of your skin concern for review by board certified dermatologist and get a response within 24 hours (they also have a sister app for anonymously submitting more embarrassing potential STD-related skin issues). Over the past few years I have developed a lot of (sun-related) freckles/spots on my upper back and had been meaning to have them checked out by a dermatologist just to be safe. Instead of paying $200-$300 for an office visit (New York City prices!), I figured I could use their app to get a diagnosis without the added inconvenience of traveling and sitting in a waiting room for several hours, all for $29.99 USD (FirstDerm claims 70% of cases result in not having to visit a doctor, but if they do notice something strange they will advise you to make an in-person appointment).


I followed their instructions and snapped 2 photos of my upper back (close up and wider shot) entered a description along with my credit card information and was given a case ID. They promise a response within 24 hours, and sure enough I received a reply/diagnosis in about 4 hours:

FirstDerm Results

Fortunately, it appears to simply be a case of Lentigo Solaris (“sun spots”). Good to know, but will keep an eye on things over time.

These are just a few current examples of mobile health apps, but over time we’ll see the continuing evolution and adoption of these tools that will add accessibility and convenience while saving time, money, and potentially lives.


Bulletproof Diet and Intermittent Fasting – My 1.5 Year Results

tl;dr version:

  • The Bulletproof diet has worked! (for me, at least). But it’s less of a “diet”, and more of a lifestyle.
  • To follow the diet long-term, some individual refinements need to be made (such as cutting back intermittent fasting, increasing carbs or adding a “refuel” day, or avoiding certain foods until pre-existing gut/autoimmune issues have been addressed).
  • Out of range markers such as high LDL cholesterol were not due to the diet – rather, the diet “exposed” other pre-existing issues such as under active thyroid and adrenals, gut issues, and chronic infections. 


It’s been a little over a year and a half since I decided to try out the “Bulletproof Diet“. In earlier posts (which I highly recommend skimming in order to get some background/context), I provided an overview of the Bulletproof Diet as well as recaps before and after my first 30 days:

What is the “Bulletproof Diet”?

Bulletproof Diet LogoTaking many queues from the popular Paleo/caveman diet, the Bulletproof Diet could be called an “upgraded”/Paleo 2.0 diet. The premise is simple – eat a high (healthy!)-fat, low carb diet, getting 50-70% of calories from healthy fats, 20% from protein, and the rest from vegetables (with some fruits and starches). A major difference between Bulletproof and Paleo is the attempt to minimize toxins from the diet which are thought to play a major factor in everything from inflammation to “brain fog”.

By sticking to approved/”bulletproof” foods, you avoid/minimize eating things that can make you weak and fat, replacing them with high-quality foods that fill you up, maintain strength, and even enhance cognitive efficiency.

Bulletproof Diet Infographic

(Download a full version of this graphic for free here.)

Intermittent Fasting

The Bulletproof diet also incorporates intermittent fasting, whereby you consume most of your calories during a very small window, typically 6 hours and fast the remainder of the day. In other words, you would eat all of your meals between, say, 2pm and 8pm. By restricting carbohydrates, your body goes into ketosis, and starts to use fat as it’s primary source of energy instead of glucose. You can learn all about intermittent fasting at

Note: If you have any adrenal/thyroid issues, read further down as you may want to minimize/stop intermittent fasting until those issues are resolved.

Bulletproof CoffeeBulletproof Coffee

A staple of the Bulletproof diet is a magical concoction called… wait for it… “Bulletproof Coffee”. In fact, most people seem to come across the coffee first, then discover the diet. You get to “cheat” intermittent fasting by having a few cups of Bulletproof coffee in the morning – a combination of high-quality, single-origin, mold-free coffee beans with grass-fed butter and MCT (or coconut) oil, which does wonders to stave off hunger while increasing cognitive function over the final few hours of your fast.

My 1.5-Year Results

When I originally sat down to put together this update, It was closer to being my 1-year anniversary, but I decided to hold off on posting anything until I was able to address a number of issues (thyroid/adrenals, gut/autoimmune issues) that were uncovered over time (more details to follow).


Ok, so here we go – below is a summary table of key markers from blood tests that were done before during, and after my 1.5-year mark.

Bulletproof Diet Bloodwork 18 months


I’ll admit that for awhile I was a little surprised that my total cholesterol and LDL numbers were not coming back down, but after seeing what others folks such as Chris Kresser had to say on the subject, my total cholesterol numbers were pretty much in line with what one would see being on a Paleo-type diet. However, notice how much my total cholesterol and LDL came down during my last blood test – I’ll talk more about this in a bit (has to do with fixing my thyroid).

While my LDL would still be considered “high” by traditional doctors, as I explained in earlier posts there are several key ratios that are more important to pay attention to – note that my ratios are even better today before I switched up my diet:

Bulletproof Diet cholesterol ratios

HDL to total cholesterol
In adults, the HDL “good” cholesterol/total cholesterol ratio should be higher than 0.24.
– 0.24 or higher is considered ideal (me: 0.38)
– under 0.24 – low
– less than 0.10 – very dangerous.

Triglycerides to HDL
Many doctors and researchers are finding the triglyceride/HDL ratio to be one of the better predictors of heart disease. The triglyceride/HDL “good” cholesterol ratio should be below 2. (me: 0.74)

>.3 = Good
>.4 = GREAT (me: 0.67)

LDL Particle Size

Additionally, not all LDL cholesterol is the same – there are two different types based on particle size. Large LDL particles have been shown to be safe, as they are “large and fluffy” and can pass freely through the body (and are even said to have some protective benefits). The smaller particle size LDL is what has been shown to increase risk for heart disease and heart attacks by getting clogged in arteries, leading to things like plaque buildup.

Looking at my LDL particle size analysis, I have type A – the large, “fluffy” type that does not put one at risk for things like heart disease. In fact, my risk factor for heart disease is lower than lowest risk bracket!

Bulletproof Diet LDL particle size


Bulletproof Diet testosteroneI was somewhat disappointed to see that after bumping up my testosterone levels some 25% after 30 days, it then started to go back down. Could my initial 30-day retest have been a false positive? Or were there other issues? Having an underactive thyroid has been directly linked to lower testosterone – as I began treating mine, lo and behold it shot right up!





Leaky Gut, Fat Malabsorption, and Autoimmune Issues

An early stool test revealed that I was indeed suffering from leaky gut and fat malabsorption issues. Additionally, I was completely missing certain types of gut bacteria, such as lactobacillus. My stomach pH was an acidic 5.8, which can often be an indicator of candida (my doctor at the time simply said I probably had a “candida-like” infection, but didn’t suggest any course of treatment or ask for additional tests). Fortunately, I was introduced to a great functional medicine doctor who quickly recognized my symptoms (having had successfully treated numerous patients with similar issues) and ordered up a battery of (but very specific) blood, saliva, stool, and breath tests.

Bulletproof Diet stool results

Chronic Infections

Test KitsSomething I had been struggling with was getting to the bottom of why my white blood cell count was always so low. We’re talking “in the red” low. After scheduling the blood, saliva, stool, and breath tests, sure enough some of the tests came back showing I had a number of lingering chronic infections, including Candida, h.pylori, Epstein-Barr virus (had mono in college), and Lyme Disease co-infection antibodies (still in my system after being bitten by a tick 10 years ago).

So essentially, my immune system was shutting down, which explains my low WBC even though I showed no outward symptoms (I never get sick) . I managed to contact a previous doctor I used some 8 years ago who still had the results of some prior blood tests and sure enough, my low WBC issues have been around for years.

h.pylori is a particularly nasty critter said to be the most common infection in the world, and it’s tricky to eradicate. Digging deeper, chronic infections such as H.Pylori can play a role in elevating one’s LDL, even when triglycerides are low.

This also puts tremendous stress on one’s body, and can ultimately wreak havoc with one’s adrenals and thyroid. Now we’re starting to peel back the layers of the onion!

Adrenals and Thyroid

I took an adrenal saliva test and at first glance, it would seem that things look pretty good, other than a slight dip below optimal range in the afternoon.

Bulletproof Diet Adrenal Profile

However, my cortisol to DHEA ratio was through the roof! This tipped of my doctor that my cortisol numbers could be artificially inflated due to the chronic infections. My doctor said I had what he called “functional hypothyroidism” – right at the bottom of the “normal” range. He was frankly amazed at how I was able to get by and still perform at a high level throughout the day (running a business, working out and playing sports, etc.).

Working with my doctor, I began a multi-stage program to support and return my adrenals and thyroid back to optimum levels, then go after the chronic infections (first, h.pylori and candida, then the others):

I definitely plan on writing more about this in the future!

Weight and Body Fat

I really hate it when something is labeled as a “diet”, because people’s first reaction is that it’s all about losing weight when in fact it’s more of a lifestyle. I’d like to first point out that weight has never been an issue/concern of mine. That being said, even while eating anywhere from 2800-3500 calories per day, early on my weight went down by approximately 10lbs , but proceeded to stabilize, hovering between 162-165lbs.

Bulletproof Diet weight

There’s a small “blip” on the chart from last July due to using what I consider a highly unreliable hotel scale while on vacation (instead of my “go to” Withings scale). Normally I’ll just eat until I’m full/happy, but about once or twice a month I’ll do a quick “sanity check” and track the nutritional info of a day’s worth of meals just to be sure I’m staying within the parameters of the diet (total calories, percentage of calories from fat, and total carbs). Over the past 3 months I have been working to get my weight up to 175lbs (increasing muscle mass), so as a result I have simultaneously put on a little bit of added body fat – I am considering increasing my carb intake to factor in the additional training.

Diet and Intermittent Fasting

Bulletproof Diet MealsI am happy to say I remained mostly “in the green” with regards to the diet, especially avoiding gluten, sugar, and grains (with the exception of some occasional white rice, which is ok), and kept my meals pretty consistent. And by consistent, yes this meant after awhile it did start to get boring. But that was my own fault due to a hectic work/life and not spending enough time researching recipes and experimenting with other ingredients. I guess I was trying to conserve willpower.

When I started, I would incorporate intermittent fasting 5-6 days/week but I had to cut it down to 1-2 days max per week as I wanted to minimize any unneeded stress put on my body while overcoming my thyroid and autoimmune issues.


In my original posts, I talked about the fact that I was actually over-training, and was switching to something more akin to Body by Science – short-duration, high-intensity workouts, in addition to playing soccer 2-3 times per week. I ended up doing a Crossfit on-ramp early in the year, which was right before one of my blood tests and sure enough my CRP skyrocketed! I was then introduced to the folks at EVO Ultrafit, who are the pioneers of neurological-based strength training, built upon a foundation of what they call “iso extreme” exercises combined with a special electrical modality that literally retrains the way your brain and muscles send and receive information. I have barely lifted any free weights since I started working with them, yet I continue to gain strength and neurological efficiency.

EVO Ultrafit POV training

Meals, Shopping, and Dining Out

Do your research and find quality sources for your staple ingredients like grass-fed (and grass-finished!) meats and pastured eggs like specialty butcher shops and farmers markets. There are also a number of farms that will ship meats through the mail!

Traveling on business proved to be the most difficult, but I found ways to make it work. It mainly came down to some advance planning, such as searching for gluten-free(ish) restaurants on Yelp, and when in doubt I would just go for sushi (also, any authentic Argentinian steak houses serve grass-fed steaks). I would pack some MCT oil and a “go kit” for my coffee in my luggage (if it was a short trip, I would pre-ground it otherwise I’d pack my hand grinder along with packing a stick of grass-fed butter in a small tupperware bowl). I also figured out “hacks” for Trader Joe’s (although I avoid most items in TJ’s, they sell ground grass-fed beef and steaks in the frozen meat section and you can buy Kerrygold butter by the case at a discount if you ask) and Whole Foods.

Bulletproof Diet Infrared Oven

A few key things I learned were how to use my slow cooker (nothing like coming home from work to some grass-fed shortribs!) and making my own bone broth. In the summer I would even make my own adapted version of the “Get Some” ice cream recipe (my own adapted version can be found here). And paleo eggplant lasagna with a mixture of ground grass-fed lamb and beef is pure awesomeness! I also highly recommend you get yourself an infrared oven – they are super-inexpensive it can cook a perfectly medium rare steak in just a few minutes, with a hint of sear on the outside but without burning/oxidizing it. I also upgraded my cookware (eliminating teflon) and cooked my food at lower temperatures (for longer duration) to minimize oxidation of fats.

Supplementation and Protocols

There’s a lot of debate currently regarding supplementation and while I agree that we should try to obtain as many of our nutrients as possible from our meals, there are certain nutrients many of us simply need to add (Vitamin D and Vitamin C are good examples).

Bulletproof Diet supplements

I’ve tweaked my supplementation regimen over time as my various blood markers reached optimal levels – in fact, I’ve actually reduced the number of supplements I take (stopped taking Vitamin A, for example).  And while it might look like I’m still swallowing handfuls of pills, most of what I am currently taking are related to supporting my thyroid/adrenals and tackling any remaining autoimmune conditions (only a few months left on my current treatment plan!).

Skin, Teeth, Hair, Bones

For a short time after starting the diet, I began to notice some skin dryness, but it soon went away (most likely due to eating foods rich in vitamin A, such as kale). Incorporating collagen protein and bone broth into my diet has also done wonders for my skin (not to mention helping to speed up healing of bumps and bruises from playing soccer).

Earlier this year I started to grow out my beard, and to my surprise there were a bunch of gray whiskers appearing at the corners of my chin! Gray hair is a natural part of aging, but there are strong ties between gray hair and thyroid disfunction (and micronutrient deficiencies such as selenium and zinc). As I began working on fixing my thyroid, lo and behold I began to notice some of the hairs regaining their pigment as they grew out!

Bulletproof Diet hair

I’ll admit that for most of my life I took rather poor care of my teeth, and have tons of fillings to prove it. However, over the past year and a half, I have had 3 checkups (every 6 months) and have found zero cavities. In fact, during my most recent visit, after my dentist finished my cleaning he marveled at the fact that my gums did not bleed at all, and said my gums were the healthiest of any patients he’s ever seen!

DEXA ScanI had a whole body DEXA Scan (Dual X-ray Absorptiometry) bone density scan performed and it showed my bone density readings to be 1.217 g/cm2 in the spine, 1.279 g/cm2 in the pelvis, 1.681 g/cm2 in the legs, and 1.293 g/cm2 in the arms, and an average of 1.391 cm2 throughout the skeleton.

This equates to a corresponding T-score (bone mineral density compared to that of a healthy 30 year-old) of 2.1, and a Z-score (bone mineral density compared to someone of same age and body size) 2.2, respectively – for reference, this is similar to what you would find in a collegiate athlete in their late teens/early 20’s.

Forget the milk – grass-fed butter… it does a body good!

What’s Next? (Adapting the Bulletproof Diet)

Like the diet itself, which is ever-evolving, I consider my journey a work in progress, making slight adaptations here and there based on my own situation and progress with the various issues I described earlier. Some general ones include:

  • Coffee: I’ve decreased the amount of butter I use in my coffee and upped the levels of MCT oil (since MCT oil is easier to digest/process). I find it easier to spread my butter consumption in smaller doses throughout the day.
  • Fat: When possible (which isn’t often enough), I opt for lamb over beef, because it’s easier to digest (and I definitely feel amazing after eating a big serving of it!). If you have any gut issues, ground meat is generally going to be much easier on your digestive tract.
  • Intermittent Fasting/Ketosis: I cut down on my intermittent fasting from 5-6 days/week to 1 or 2 (usually on a weekend, the least stressful time of the week). I will gradually scale back up as my other conditions improve.
  • Increasing Carbs: Until my thyroid issues are resolved, I’ve increased my carb intake a bit. I’ve noticed a slight bodyfat increase, but that could also be due to my increased protein intake as I continue to train and try to gain some more muscle mass.
  • Protein Fasting: I consume a large amount of protein each day, and the latest version of the Bulletproof Diet suggests doing a protein fast 1 day per week (consume less than 15 grams) to trigger autophagy (allowing the body to rid itself of damaged cells), which has been shown to have tons of benefits.

Also, I will continue working through my various protocols to continue healing my gut and undoing issues that I had unknowingly been dealing with for decades.

Pwew! That was a long post, but hopefully you have gotten some value out of me sharing my experience so far.

Ten Things I Learned at the 2014 Quantified Self Europe Conference

QuantifiedSelf Europe 2014On May 10th-11th 2014 I had the pleasure of attending (and speaking) at the 2014 Quantified Self Europe conference in Amsterdam. I have attended the annual US conferences the past few years, so I was excited to see lots of familiar faces, and even more new ones. It was a fun, educational, and inspiring time and my post-event buzz still hasn’t worn off (whereas thankfully the Jenever has!).

In the spirit of Quantified Self’s “Show and Tell” talks, I’ve structured my recap using the 3 questions every presenter is required to answer…

What Did I Do?
I attended Quantified Self Europe 2014.

How Did I Do It?
I registered for the conference, prepared my talk, and eagerly got on a plane from New York City to Amsterdam, where I took a short train ride to get to Hotel Casa 400.

What Did I Learn?

1. So many great sessions (and not enough time!)

The conference was so packed full of great talks and breakout sessions happening at the same time that there was simply no way to see it all. Fortunately, most of the talks (including mine!) were recorded and the QS folks will be posting videos shortly. I often found myself running from room to room to take in as much as possible or walking in late because of a great conversation I was having during one of the breaks!

Quantified Self Europe 2014 Breakout

credit: @addappio

2. Privacy concerns shifting from “mine” to “yours”.

Whereas the QS privacy/data debate has focused on the self, there was a much more awareness about factoring in the privacy of others we may be recording without their consent/knowledge with the proliferation of “lifelogging” devices. And even with all of this lifelogging going on, ironically, not one person posted a photo of me giving my talk on the conference Flickr stream! (please send me a pic if you took one :))

Narrative Clip

credit: Jim Tuttle/NPR

3. Europeans have a much better fashion sense than Americans.

Amazingly, I did not see one person wearing a pair of Vibram Five Fingers. Sorry San Francisco!


credit: Rajiv Mehta

4. QS is not just about health.

While much of the QS subject matter has a heavy focus on health/wellness, people are using self-tracking to better understand all aspects of their lives, from productivity to grief, improving memory to goal setting, improving relationships to tracking media consumption, to even transforming data into art!

Quantified Self Data as Art

credit: @kiranezu

5. But as it relates to health, QS…

Is evolving from people sharing stories about identifying/treating/overcoming existing problems to using self-tracking as a way to take proactive/preventative measures to ensure they can live optimally both today and in the future (what’s the point of living a long life if you aren’t able to truly “live”?).

Quantified Self Europe 2014 Fitness

credit: @yago1

6. Quantified Self vs. Biohacking

While QS and biohacking are very connected, not all QSers are biohackers, and not all biohackers consider themselves QS practitioners. This seems to be becoming more evident as practitioners begin to push the envelop on both fronts. I personally view myself as someone that falls smack in the middle – an avid practitioner of both.

Quantified Self vs. Biohacking

7. QS is a global movement.

Probably my favorite part of the conference was that as an American, I was of the minority in attendance, and it was great to engage with so many people from other parts of the world. They really brought a fresh perspective to the QS conversation. That being said, as much as I love San Francisco, I think future QS conferences would benefit from moving to locations outside of the San Francisco/Bay area, where it can feel very insular and disconnected at times.

8. Startups, startups, startups.

As the QS movement continues to grow, so too is the QS-related startup ecosystem. It was great to see companies that just a year or two ago were nothing more than a prototype finally launching and raising some serious capital. In addition, some big established companies are beginning to show up (from consumer electronics to pharma). I hope that future conferences can maintain their content focus on allowing individuals to give talks about their personal journeys and not having the talks get too commercial/salesy (I will still visit all of the sponsor booths!).

Quantified Self Europe 2014 Sponsors

9. Seth Roberts left a lasting QS legacy.

The closing plenary was a touching tribute to the late Seth Roberts, who unexpectedly passed away just weeks before the event. While I never knew Seth personally, I definitely admired and have been inspired by his work and it was touching to hear various attendees share their stories about him. Whether you are simply curious about self-tracking or are an active practitioner, his blog and papers are required reading.

10. Amsterdam is an awesome city!

After spending 2 rainy days holed up in the conference hotel, I was so glad I tacked on a few extra days after the conference to check out as much of the city as possible. If you’ve never visited, I highly recommend it. It’s the most laid-back, friendly city I have ever been to. I can’t wait to go back!


Thanks again to all of the conference organizers for putting on such a great, smoothly run event. I realize what a tremendous amount of work must have gone into making it a success! The QS folks have posted their own recap/roundup, which also includes links to recap posts by other attendees. Can’t wait until the next one!


Hacking (and Tracking) My Glucose

I never paid much attention to my blood sugar (aka blood glucose, or as I will simply refer to it, glucose) until a few years back, when I started getting more interested in self-tracking/biohacking and my 23andMe DNA analysis showed that I had a genetically elevated risk for type 2 diabetes, which has been shown to be preventable by maintaining low levels of glucose. Elevated glucose can also contribute to a number of other health issues such as cardiovascular disease.

23andMeType 2 Diabetes

The current “accepted” recommendations by the American Diabetes Association for fasting glucose (i.e., no food or drink in the previous 8 hours) are between 70 – 130(!) mg/dL. The exclamation(!) mark is there for a reason. The upper bound is being hotly disputed – in fact, the ADA has a term called “impaired fasting glucose” that was lowered from 110mg/dL to 100mg/dL in 2003. That means that many people that are classified as “normal” are, in fact, pre-diabetic. Organizations like the Life Extension Foundation (a leading organization focused on advancing research on longevity and anti-aging) suggest keeping fasting glucose at or below 85 mg/dL (and optimally even below 80!).

My most recent blood test showed my fasting glucose level was 85mg/dL, considered “good”, even by Life Extension Foundation guidelines. But what I wanted was to better understand how various factors affected my levels, and then be able to proactively control them. Even though my glucose is considered good, I wanted it to be optimal. Why take any chances? [Read more…]

A Step is (Not) a Step – But Does it Matter?

While assembling some of my data for another self-tracking experiment, I grabbed the number of daily “steps” recorded by both Moves and my Basis B1 and whipped up the following chart:

Basis steps vs. Moves steps

I wanted to see if there was a statistically significant relationship between daily steps reported by Moves vs. Basis, even though their values are clearly different. To do so, I analyzed the data using a free online data analysis tool called Statwing and sure enough, there was a statistically significant relationship!

Basis steps vs. Moves steps Statwing correlation

Looking at the chart on the right, you will see that there is a generally linear correlation between number of steps recorded each day between Basis and Moves. For you statistics geeks, here are the correlation/regression details:

Basis vs. Moves steps Statwing correlation

I realize there will always be outliers, such as when I’m playing a sport or exercising wearing my B1 but not being able to hold my iPhone (in which case, Moves can’t track me), device batteries dying or needing charging, etc. but the fact that I can use either tool as a way to visualize general activity trends is good to know.

The lesson learned here is that regardless of what device you are using to track your activity, over time it’s not about whether you took 8,000 vs. 10,000 steps, but rather that you increased your activity by 20%! That, to me, is the most important metric.