Nidra__ampersandsignnbsp;is one of the most important phenomena which is directly related to and influences the achievement of happiness and misery in a man__ampersandsignrsquo;s life. Similarly, as diet and exercise regimen is important for the health of a human being, Nidr? plays a vital role in maintaining proper health and so is the key to live a successful and healthy life. The importance of Nidr? has also been elaborated by Acharya Charaka as follows: As proper ?h?r is required for maintenance of health similarly Nidr? is required for happiness and health. Obesity and leanness also depend on Nidr?. Thus, it is stated that when there is decrease in the Satva Guna in human beings, then it ultimately increases the effect of T?masika Guna. Due toincrease in the T?masa temperament, there is more influence of Nidr? on an individual.