But seriously its something that we can explore so much, I remember reading on here a while ago about a pill that can replace 8 hours of sleep.

CIA interrogators at Guantanamo Bay subjected dozens of detainees to sleep deprivation, shackling the prisoners in a standing position for up to 11 days at a time. Recently released Justice Department memorandums claim sleep deprivation studies show that "surprisingly, little seem[s] to go wrong with the subjects physically." Wait, is it really safe to go without sleep?
No—extended bouts of sleeplessness can cause an array of physical symptoms and might eventually kill you. The effects begin within the first 24 hours of sleep deprivation.
he body undergoes subtle hormonal changes—cortisol and TSH levels increase, leading to a rise in blood pressure. A day or two later, it stops metabolizing glucose properly, creating carbohydrate cravings. (This phenomenon may have gone unnoticed among the detainees, who were already on a calorie-restricted diet.) A person's body temperature will also drop, and his or her immune response becomes somewhat suppressed. All of these physiological changes are reversible, though—take a nap, and you'll be on the road back to normal.

