4. Cold Showers and Contrast Therapy
Taking a cold shower first thing in the morning was easily the most shocking routine I tried. Advocates tout benefits like increased alertness and even stronger immunity. The initial few days were pure discomfort, but I gradually adapted and felt more awake after each shower.
There’s growing evidence that cold exposure can boost mood and circulation, though the science is still emerging. While I didn’t notice dramatic immune changes, I did experience a consistent jolt of energy—far more effective than a cup of coffee.