Maintaining autonomic function through morning sunlight, sufficient sleep, adequate nutrition, and social connections supports tenacity and willpower.

“willpower and tenacity ride on our current autonomic function we can translate that to Everyday Language by saying that when we we are well rested for instance when we've been getting great sleep of sufficient duration the previous night and the night before that our level of tenacity and willpower to engage in things that we would not ordinarily engage in by default and our ability to resist behaviors and thought patterns that would otherwise be our default behaviors and thought patterns is much higher conversely when we are not getting enough quality sleep on a regular basis our ability to call on tenacity and willpower is diminished”