Sleep, a very fundamental process to our lives, there's a lot that we don't get right about it. Till few days back, we didn't have good answers to the question of "why" we sleep and it’s true importance, as UC Berkeley neuroscience and psychology professor Matthew Walker explains in his recent book, "Why We Sleep: Unlocking the Power of Sleep and Dreams." We're better at answering that question now. We know that sleep restores the immune system, balances hormone levels, lowers blood pressure, cleanses toxins from the brain, and much more than all this . "We no longer have to ask what sleep is good for," wrote Walker. "Instead, we are now forced to wonder whether there are any biological functions that do not benefit by a good night's sleep. So far, the results of thousands of studies insist that no, there aren't." But while we know far more about sleep now than we used to, there are a huge number of myths about sleep tha...