Sleep

Most people need seven to eight hours of  sleep a night. Some people need less than this, and some people need more. According to sleep expert Dr. Robert Schachter, many people have difficulty sleeping, but they do not know why. Most people know it is important not to drink coffee or tea before they go to bed both beverages have caffeine. Caffeine keeps people awake. However, not everybody knows that some medicines, such as cold tablets, also have caffeine in them. Stress can cause insomnia, too. Busy people with stressful jobs may not be able to sleep at night.
Dr. Schachter suggests. "You shouldn't use your bedroom as a TV room or an exercise room. You should use it for sleeping only. It's a good idea to have a regular sleeping schedule. Get up and go to bed at the same time every day. It's also important not to eat before bedtime. Eating may keep you awake."

And if all this doesn't work, try counting sheep!