what is the healthy amount of sleep
View Larger >>. Humans, like all animals, need sleep, along with food, water and oxygen, to survive. For humans sleep is a vital indicator of overall health and well-being. We spend up to one-third of our lives asleep, and the overall state of our sleep health remains an essential question throughout our lifespan. Most of us know that getting a good nightâs sleep is important, but too few of us actually make those eight or so hours between the sheets a priority. For many of us with sleep debt, weâve forgotten what âbeing really, truly restedâ feels like.