The brain's preferred source of fuel is glucose/carbohydrates. And when you go on a low-carb/high-protein diet, your brain is using low-octane fuel. You'll be a little groggy, a little grumpy.

Your age is the sum total of your physical condition, the condition of your mind, and how you feel.

People will set a New Year's resolution: "I'm gonna get in shape this year." But they don't set a parameter for how they're gonna measure it. Or if they do measure it, they wait until the first day of the next year. You'd never run a business that way. Document your progress.

Probably millions of Americans got up this morning with a cup of coffee, a cigarette and a donut. No wonder they are sick and fouled up.

My goal has always been to help people help themselves. Your body is your most priceless possession; you've go to take care of it!

That's what I wanted! I wanted to be an athlete, I wanted the girls to like me, and I wanted to be able to get good grades in school, and this man said I could do all that.

Never get satisfied. The minute you stop trying, you go downhill.