15-50% of the thoughts in your head during the day are about what you're going to eat next. What if there weren't any of those? What would you do with 15-50% more capacity for thinking. That's why fasting is important. If you want to show up in the world as yourself, stop thinking so much about food.

Don't eat seed oils, and don't eat grains, and don't eat fake meat. If it tastes like meat and it's not meat, it is hacking your operating system and not for your interest.

The amount of caffeine in two cups of coffee doubles ketone production according to a study from UC San Diego ... When that happens, magically, your ghrelin, which is your hunger hormone, it drops and CCK, a satiety hormone, goes up.

Fasting is like a Swiss Army Knife—an incredibly impactful tool that has far more use than just weight loss. Through fasting, you realize self-control, and self-control leads to you making better decisions about the air you breathe, the food you eat, and the content you consume.

It is a fool's errand to pretend that your serving of pinto beans or liver has X amount of minerals in it, because it probably doesn't ... You can go to a calorie and a food tracker app... That is all masturbation. It feels good, but nothing productive happens at the end. You simply don't know what's in your food.

You don't get meaningful vitamins from your brown rice. The fact that there's more of them in there than the white race doesn't matter because you have to eat 6 pounds of it or something to get enough vitamins to matter, and then you're just going to be fat.

Nothing makes entrepreneurs happier than keeping other entrepreneurs from going through all the shit that they went through.

If you expose yourself for 3 days to cold temperatures, that is the amount of time it takes to change the amount of compounds in cardiolipin, which is a critical part of your mitochondrial membrane. That's why, after 3 days, suddenly, it doesn't suck to be in the cold, but the first 3 days are miserable.

All the mistakes that I made were because I didn't have good information, and I just believe that when we're young, if we could get good guidance, we could avoid a lot of pain.

There are three things we know of that suppress mTOR... One of them is fasting, one of them is coffee, and one of them is exercise.

Let's say you're overweight, and let's say that you've never fasted before—there is good evidence that a 12-hour fast is a good place to start.

The best type of intermittent fasting is the one you're going to do—they all work.

You're an author too—you know that your hourly rate for writing books is a terrible deal. You write a book because you have to write the book or because you have something that you think is worth thousands of hours of your time and worth your readers' time ... I think I could make coffee as a barista in one of my coffee shops and probably equal the hourly rate.