Dr. Michael Greger

military did these experiments.

The Army did the first experiments where they actually took people and gave people 2,000 calorie meals, a single 2,000 calorie meal, the exact same meal, either as breakfast and fasting the rest of the day or as supper.

And they found these remarkable differences, the exact same food, exact same calories, different amount of body fat, different amount of metabolic implications of just that single tweak.

It's because of

chronobiology, the remarkable impact that our circadian rhythms have on our biology.

We typically only think of our circadian rhythms when we're jet lagged.

Like, that's the only time we're even thinking about, you know, our bodies.

But that's just kind of a symptom of this really deep underlying... Most of our biological processes, our biochemistry, our enzymes, actually go on this clock.

And so it really matters.

There's this really...

devastating literature about pesticide suicides.

In India, that's a common way for people to commit suicide, but in manners, whether they survive, whether they do it in the morning or in the evening, because their body's better able to handle it in the morning, better able to detoxify

Because of our circadian rhythms, you're much more likely to survive a poisoning attempt.

Wow.

And this is just how powerful, it just suggests the power of our circadian rhythms.

Really fascinating.

I dived deep in my How Not to Diet book where I was talking about weight loss.

And that entire field, fascinating.

Never learned about it in medical school.

Wow.