: The latter theory, referred to as Survival Theory, postulate that sleep is a more of an evolutionary necessity, as well as being restorative in nature, allowing us to survive the various threats that may potentially face us on a day to day basis. For example, one of these aforementioned concepts, the aptly titled Evolutionary Theory, posed by Meddis (1975), states that sleep is a function primarily devoted to aiding a species in ensuring their continued survival. Sleep aids these varying species to a great degree, supposedly replenishing our energy supply after a vigorous evening of food gathering, and throwing predators off of our scent, so to speak, remaining motionless, and therefore, appearing dead, and unappealing to their very particular
