What would happen if humans no longer needed to sleep?
What would the world be like today if humans evolved to not needing sleep?
If sleep leaves animals vulnerable to attack, why didn't we evolve to rest while awake? Tomorrow, you wake up as the only human being on Earth for an indefinite time. How would you live? What do people around the world typically wear to sleep? What would the world look like today if we never evolved to homo sapiens? What is the bare minimum amount of hours of sleep that the human body really needs in order to function efficiently throughout the day? What if we had no circadian rhythms? Why does people sleep? What are the risks of having a reversed sleep cycle? How is it possible to die from lack of sleep? What is the science behind sleep? Why don't we sleep when we are awake? How much time is a human being required to sleep? How much of a tangible impact will long term sleep deprivation have on me now? Can too much sleep affect our health? Why do humans fall asleep? Does everyone always get sleep paralysis, or does it depend on sleep position, genetics, and or time of waking? If you could wake up tomorrow in the body of someone else, who would it be? Why? How can you manage sleep (decrease sleeping time) in daily life? Why some of people still sleep all over the day? By practicing to sleep for 5 or 6 hours, is it possible to maintain a healthy life style? Would having two 4-hour cycles of sleep (per day) as effective for the body as sleeping 8 hours in a row? What is the science of sleep? Human Body: Why we don't get tired breathing? What would the world look like if we never evolved to homo sapiens? If you could wake up tomorrow in the body of someone else, who would it be? Why is it nearly impossible to sleep soon after waking up from a nap? Can lack of sleep stunt growth? Why we can't wake up in the morning? What would change if we woke up tomorrow and there were no gender differences? How would the world be different if humans evolved from birds rather than monkeys?