Fitting a walk into a busy life can be challenging, so I suggest walking rather driving to work or to run errands as often as you can - in other words, think of walking as alternative transportation.

Any drug can be used successfully, no matter how bad it's reputation, and any drug can be abused, no matter how accepted it is. There are no good or bad rugs; there are only good and bad relationships with drugs.

Fear and greed are potent motivators. When both of these forces push in the same direction, virtually no human being can resist.

Studies have shown that people who are physically active sleep better than those who are sedentary. The more energy you expend during the day, the sleepier you will feel at bedtime.

I'm not against high-tech medicine. It has a secure place in the diagnosis and treatment of serious disease.

I think it's worth trying to do something about obvious sources of stress in your life. But even more important is learning and practicing methods to neutralize the harmful effects of stress on the body and mind. There are many possibilities, anything from meditation and yoga to listening to relaxing music. My personal favorite is simple breathing techniques - they're very effective, take very little time, and they're free.

When people are told to "eat many small meals," what they may actually hear is "eat all the time," making them likely to respond with some degree of compulsive overeating. It's no coincidence, I think, that obesity rates began rising rapidly in the 1980s more or less in tandem with this widespread endorsement of more frequent meals.