Muscle cells strengthen in response to intense exercise - whether you're 18 or 88. But the intensity is what's lacking in most people's workouts. And there are doctors who'll give you the advice, "Well, don't push it."

I train like I'm training for the Olympics or for a Mr. America contest, the way I've always trained my whole life. You see, life is a battlefield. Life is survival of the fittest... How many healthy people do you know? How many happy people do you know? Think about it. People work at dying, they don't work at living. My workout is my obligation to life. It's my tranquilizer. It's part of the way I tell the truth--and telling the truth is what's kept me going all these years.

Physical fitness takes commitment to exercise just as it requires good nutrition. But it doesn't have to be painful. Just the opposite: Vigorous exercise actually is stimulating. It boosts your energy levels, invigorates your mind, and just feels good afterward. The hardest part, of course, is getting started.

The most important person on this earth is you. What are you doing to help the most important person in this world: you? To live right, you have to exercise, have goals and challenges.

Maybe 50 or 60 percent of all divorces are predicated on someone's being physically unfit. Who wants to live with negativism? Love goes out the window.

Many so-called spiritual people, they overeat, drink too much, they smoke and don't exercise. But they do go to church every week and pray 'Please help my arthritis. Please help me bring up my strength, make me young again.'

Whatever you can handle, it's up to you. Pick something where you are going to do it to failure--in other words, where you can hardly do it. That's the key. So many people will just take five pound weights and do something 10 times. What are they getting out of it? Nothing! Say you are going to build up your bank account. If you put in a penny a day, it's going take a long while. It's the same with exercise--the more you put into it the more you take out.