Here are some facts on why we sleep and how to sleep better:
Warm-blooded animals use up a big amount of energy for the maintenance of body temperature and other related functions. This energy is replenished during sleep.
Sleep deprivation affects people in many ways, including their reaction time, ability to clearly think, and memory retention. A lack of sleep affects mood, which can create a vicious cycle that magnifies stress, depression, anxiety, and problems with relationships.
Exercise is a great way to promote sleep--but not if you work out late at night. The body takes about 4 to 6 hours to cool down after exercise. A hot bath or shower closer to bedtime is more advisable than hard exercise.
Alcohol disrupts the normal sleep cycle. According to Dr. Alex Chediak, "Four hours into sleep, alcohol wears off and leaves you in an excitable state."
Instead of booze, focus on having meals at the same time daily. This consistency in schedule is supportive to the body's internal clock.