How can jet-lag be minimized? Why are some people "nightowls" and others are not? How do babies develop a 24-hour body clock? How is the body clock affected by aging? These are some of the perplexing questions addressed by this fascinating new book. We all have an internal "clock" that controls how we feel, our mental and physical performance, and whether we are active or asleep. This is nature's response to our rhythmic environment, which is dominated...