The notion that a human being should be constantly happy is a uniquely modern, uniquely American, uniquely destructive idea.

Pay attention to your body. The point is everybody is different. You have to figure out what works for you.

The more easily digestible and refined the carbohydrates, the greater the effect on our health, weight and well-being.

To be clear, I worry as much about the impact of the Internet as anyone else. I worry about shortening attention spans, the physical cost of sedentary "surfing" and the potential for coarsening discourse as millions of web pages compete for attention by appealing to our base instincts.

Whenever the immune system deals successfully with an infection, it emerges from the experience stronger and better able to confront similar threats in the future. Our immune system develops in combat. If, at the first sign of infection, you always jump in with antibiotics, you do not give the immune system a chance to grow stronger.

Get people back into the kitchen and combat the trend toward processed food and fast food.

For many in the modern world, carving out time for both traditional seated meditation and exercise has become close to impossible.