Clearly, America's dysfunctional food culture must bear some of the blame for our excess pounds, but it's likely our walking-averse lifestyles contribute as well.

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.

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.

Technology has a shadow side. It accounts for real progress in medicine, but has also hurt it in many ways, making it more impersonal, expensive and dangerous. The false belief that a safety net of sophisticated drugs and machines stretches below us, permitting risky or lazy lifestyle choices, has undermined our spirit of self-reliance.

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 believe that it may be normal, healthy, and even productive to experience mild to moderate depression from time to time as part of the variable emotional spectrum, either as an appropriate response to situations or as a way of turning inward and mentally chewing over problems to find solutions.

The desire to transcend one's own ego boundaries, to share completely, even for a moment, the consciousness of another person must be a universal longing. It motivates many of our activities from taking drugs to making love, and lies behind the search for new ways of getting close to one another that is so intense in our society today.