I have 4 children. I love them deeply. I have noticed that they want more of Daddy lately, because they ask all the time, "Daddy, will you play with me?" I have also found myself saying, "Son (or daughter), daddy has work to do. We can hang later. I promise." Have you ever said this?  To some degree this is completely appropriate. It is irrational to be able to play with my kids as often as they would like.

Yet, my fear is that I say this too often. 

What happens when you do not sleep? Moreover, why do we need to do it? This post will explain the science of sleep: the cause, the benefits, and why you need it more than you think.