Each year over $230 million is spent on sleep related research. The lack of sleep can cause a number of health related issues which include depression, disorientation, reduced energy levels, and irritability. People turn to just about anything to help them relax and fall asleep. It is really important that your body gets an average of 8 hours of sleep each night. People can turn to exercise, natural supplements, or a warm baths to help them relax. There are many natural sleep aids.