The third and most unheralded part of the physical body is none other than SLEEP…yes, plain old, sleep. It is easy to think that diet and exercise contributes to the overall well-being, but most people would probably not put sleeping at the same level. If you sleep a lot, many would consider this as a sign of laziness or a waste of time, which is absolutely wrong.
One of the better books that i have read is this one called Why We Sleep by Dr. Matthew Walker, associate professor (psychiatry) at Harvard and researcher on sleep at UC Berkeley.
In his book, he talked about a group of researchers who did an experiments on sleep deprivation on rats. While we are all familiar that humans cannot survive long without food or water, the research found that the rats die at roughly the same time due to lack of sleep compared to lack of food. Initially, they could not identify the root cause, but after running some more test, they found that it is internal gut bacteria that went out of control that killed the rats, something which sleep can easily help to control.
He also provided advice on best practices and answers some common questions on sleep, such caffeine and melatonin.