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Life In the Fast Lane: My Experiment with Intermittent Fasting for Health and Fitness

I'm turning 40 this December, and that's caused me to deeply re-evaluate my health. In high school I had wrestled at the 152 lb weight level and was a gymnast. In my 20s, I ran two 50 mile ultra-marathons and a half dozen marathons. I had a 33 inch waist and weighed 185 lbs. I could eat whatever I wanted and stay in good shape. But after a decade of doing startups, I found myself in my late 30s in much worse shape. My metabolism hit a wall when I turned 30, and although I didn't eat terribly, I also found it hard to figure out exactly how to get back to where I was in my 20s. My waist was 38 inches and I weighed 245 lbs; 93 lbs over my wrestling weight. My triglycerides were 33% above where they should've been. I'd imagine this happens to many of us as we get older, and I felt helpless as I watched all of this unfold, almost like it was happening according to some script that I wasn't in control of. Most of all, I was really disappointed in myself for not staying on top of my health, but I couldn't find the right balance of eating and exercising to change the path I was on. It felt like I was on a slow motion slippery slope as I got older and more out of shape.

When my daughter was born in 2013, I made myself a promise: I would be in as good of shape when I turned 40 as I was when I turned 30. I didn't want to have a hard time keeping up with her as she grew up. I started doing CrossFit twice a week that year. I signed up and completed a few triathlons. But my weight still wouldn't budge from 245 lbs, and my triglycerides, although lower, were still 15% above the max recommended range. CrossFit was making me much stronger, but that was only part of the puzzle. I had to figure out the rest, and I hadn't quite cracked it.

In December of last year, I realized I was running short on time: I'd really have to hump it to get back in shape within the next year, before my 40th birthday in December 2015. By this time I had upped my CrossFit schedule to 3x per week and I started rowing for 15 minutes before CrossFit started in the mornings. But that still wasn't enough: By April I knew I was going to have to take some much more drastic measures to reach my goal.

This blog is a story of those drastic measures, and how they're going. It's a deep-dive into the rabbit hole that we call 'health' as I see it. It's a journey that I invite you to take with me as we all get older, together. I am only starting to unlock some of the things that affect my body and I would love your thoughts and opinions as well in the comments below.

Let me also caveat this entire blog by saying that some of what I write about below is contrary to the things we've been told to believe, and I fully recognize that. I'm not a medical expert and I'm not telling you to throw away what you believe to be true. But just walk into all of this with an open mind, as I'm trying to do, and more importantly, be willing to try some of these things yourself if you also want to experiment a bit to try to find a better path than you've found so far.

Fasting is good

On SEBASTIAN MARSHALL

I started outlining and writing a piece about the biochemistry behind it, but (1) it took me down a way deep rabbit hole, and (2) I'm not very clear that I don't understand the topic well enough to write about it.

That said, when doing a basic intermittent fasting protocol a la Leangains.com, it's been relatively easy to consistently march down towards lower bodyfat and greater health and wellness.

I ran a caloric deficit of between 500 and 1000 calories each day, eat all those calories spaced into a 4-6 hour window.

That was pretty good, and remains pretty good.

I've recently (six weeks ago) started experimenting with fasting 24+ hours, sometimes to the 60 to 70 hour range once a week.

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