Tony Robbins

So it has to burn fat in order to make the ketone.

The ketone goes up into your brain.

It turns off hunger, but it also sharpens your mental clarity.

And it also, by the way, increases a neurotransmitter called GABA that calms you.

So I can be 48 years old, have major brain fog, have been gaining weight just looking at food, and now all of a sudden I'm teaching that 48-year-old to go into a 15, 17-hour fast, and they're going to lose weight and increase their mental clarity because they've put this tool into place that's going to give them both weight loss and mental clarity.

I'll give you another interesting conversation I had, and I talk about it in the book.

Lisa Moscone, she's like the number one female brain researcher right now.

I brought her on my podcast and said, tell me what menopausal women should be eating when they go into menopause because the brain isn't as good as using glucose.

And she was like, well, they need to learn how to make ketones.

I'm like, yes, exactly.

So we're not bringing the ketone into the brain picture for menopausal women.

So you got to start fasting when you're in menopause to get that brain energy back online.

And the byproduct of that is you burn fat to get the ketone.

See, the thing is, though, do you know who Stacey Sims is?

Oh, yeah.

Did you have her here?

Of course.

I love her.

Yes.

Yeah.