Deep sleep is the holy grail for your life, and there is one guy who measures it, besides everything else you can measure in/from your body.
Deep sleep is what your body and brain rejuvenates and resets you every night. It requires total rest in your head. Its more than a reset, it builds cognitive strenght. For example in relation to willpower and eating. The better the sleep, the stronger you become in your head to resist all type of bad stuff. It’s a vicious circle: the better you sleep, the better you feel, the better you performe, the better you act. And reverse!
And again, its not just sleep, it’s all about deep sleep. To get into that state, a quit mind is necessary; and that is the domain of ZEN Sleep™.