The cold is a friend for athletes, wellness warriors, biohackers, and fitness enthusiasts that dare to take the plunge and experience incredible results - full muscle recovery, pain relief, improved health and wellbeing and boosted mood and energy. Cold water immersion (CWI) exposes your body to extreme coldness. It's a huge stressor that the body is not familiar with. As a result, your system will be shocked, your breathing will be erratic, and your body will need time to adapt. But as you build tolerance, and your breathing calms, your doorway into the mental and physical benefits begins to open.