It is more important to eat some carbohydrates at breakfast, because the brain needs fuel right away, and carbohydrate is the best source.

As an undergraduate at Harvard in the 1960s, I was fascinated by my visits to psychologist B.F. Skinner's laboratory.

Remember that breath walking - as with any meditation technique - should not be pursued with a grim determination to 'get it right.' The point is to cultivate openness, relaxation and awareness, which can include awareness of your undisciplined, wandering mind.

By keeping my hand in that, it's the way I keep learning. The main way you learn in medicine is by practicing and working with patients.

I've always been called "controversial." I think if I were not controversial I wouldn't be doing my job.

Human bodies are designed for regular physical activity. The sedentary nature of much of modern life probably plays a significant role in the epidemic incidence of depression today. Many studies show that depressed patients who stick to a regimen of aerobic exercise improve as much as those treated with medication.

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.