Exercise is a journey, not a destination. It must be continued for the rest of your life. We do not stop exercising because we grow old - we grow old because we stop exercising.

So I've broadened the fitness concept to make it one of moderation and balance.

Now I say that if you run more than 15 miles a week, it's for something other than aerobic fitness. Once you pass 15 miles, you do not see much further improvement.

Far too many times over the next 12 to 15 years, it was brought to my attention that people who followed my exercise guidelines exactly but ignored their diet, their weight and their cigarette smoking had heart attacks at age 55.

It's easier and more cost effective to maintain good health, than to regain it once it's lost.

Since then, I have not missed five consecutive days in getting some type of aerobic exercise, mostly jogging.

I think investments in general related to the exercise industry are going to be good for a long time.