Sleep is a natural biological event, to which the contemporary world is struggling to get. Lack of healthy sleeping invites many diseases both mentally and physically. Insomnia is one such disorder in which an individual is unable to initiate or is unable to maintain the process of sleeping. Insomnia can be a root cause of other disorders such as night terror, sleepwalking. Other physical disorders it brings are high blood pressure, obesity and cardiovascular diseases. The various forms of insomnia are:
