13. Why Do We Sleep?
No matter who you are, where you live, or what you do – all of us feel sleepy. In fact, going without sleep for just 3 back to back nights can even kill you! But why exactly do we need to sleep every single night?
This is a question that has got scientists working overtime to solve. Some of them say that it was a habit that evolved to keep humans safe from wandering at night and getting in trouble with predators.
Others say that sleeping could be a way for us to conserve our energies. But what we do know from studies is that sleeping helps us rest and recover physically as well as mentally.