Cold Showers
The cold exposure for health and performance temperature is a powerful stimulus on our nervous system and indeed on every organ and system of our body and cold in particular can be leveraged to improve mental health, physical health and performance meaning for endurance exercise for recovering from various forms of exercise. For actually improving strength and power and for enhancing mental capacity in order to properly leverage deliberate cold exposure for sake of mental health, physical health and performance you have to understand how cold impacts the brain and body.