Sleep is like your significant other. You’re fond of it, but you don’t really understand it. From an evolutionary perspective, sleep is a strange phenomenon that transforms us into unconscious, ready-to-eat meals for predators. To compensate for the risks it exposes us to, it needs to have tremendous evolutionary benefits. Turns out - it does.
Sleep Well researched and explained, finally i dont have to feel guilty about the quantum of my sleep and my sleep cycle :-)
Also ....its good for health