Get Proper Sleep Nightly

The emerging evidence is clear and compelling. This one factor regulates everything from your metabolism to mood. Even controls half your genes.

STORY AT-A-GLANCE

• Research suggests most adults need about eight hours of sleep per night to maintain good health. Lack of sleep can increase your risk for accidents, weight gain and chronic diseases, and impair your memory

• The “sleep onset latency test” developed by the late Nathaniel Kleitman, Ph.D., can help you determine if you're sleep deprived

• While …