One of the most startling findings is the notion of constrained daily energy expenditure. This is the idea that the human metabolism adapts to our activity levels to keep our daily calorie burn in a surprisingly narrow range — no matter how hard you work outWhy Crash Weight Loss Programs Don’t Work: Clues From Hunter-Gatherer Societies — https://www.npr.org/sections/health-shots/2021/07/16/1016931725/study-of-hunter-gatherer-lifestyle-shows-why-crash-weight-loss-programs-dont-wor?utm_source=pocket-newtab
Now I understand how my low exercise levels during year one of the pandemic factored into my weight loss efforts. My metabolism reset and it spent calories on other life functions. Here’s the part of the interview that hit home for me. The quote refers to a recent television show The Biggest Loser.
Contestants went on this show and were put under a brutal routine of intense exercise, coupled with near starvation. You can lose a lot of weight that way. But it’s not sustainable. Your body pushes back hard by slashing its metabolic rate.
The Take Home Lesson
DO exercise for all of its associated health benefits. But exercising more is not exactly the best strategy for losing weight.
Herman Pontzer is an evolutionary anthropologist at Duke University. His theory argues that human metabolism has evolved to the point where how we eat and expend our calories is more important than what we eat. I think I’ll put his recent book on my list of books to read.