Microfiltration and ozone disinfection ensure crystal-clear cold water, empowering daily cold plunge therapy practice year-round. A longer study of Italian rugby players tracked changes in testosterone levels resulting from seven straight days of twice-daily cold air cryotherapy. These results corroborate several others that suggest cold water immersion after exercise will mute anabolic gains from resistance training. For example, I've heard from two male professional athletes who suffered from low testosterone prior to commencing a practice of cold plunge therapy followed by exercise. Testosterone is a multitasker, carrying out numerous functions in the body, including sexual development, bone and muscle mass, fat distribution, mood and quality of life, red blood cell production and brain function. The conversation around the hormone testosterone usually focuses on adult male physiology and sexual function, but testosterone plays a critical role in the bodily function of people of all genders and ages. There is a growing amount of literature on the impacts of cold exposure on the body. But it's not worth the added stress to be burning a bunch of extra calories, shivering your ass off for two hours. I think he said like 8am and I'm still shivering at 10am I told him, look, dude, you have gone beyond the benefits. Then you know you've activated that brown fat. Cold plunges activate brown fat, a metabolically active tissue that burns calories to generate heat. Men typically carry more visceral fat, the deep belly fat linked to chronic disease. Men are embracing skinimalism, hydration, and stress recovery as part of a smarter skincare routine that actually fits their lifestyle. As longevity specialist Dr. Mike Stone puts it, "You get dopamine and norepinephrine release when you get into an ice bath. Cold exposure has been shown to reduce cortisol levels and enhance hormonal resilience. This process can indirectly affect testosterone levels by improving the testosterone-to-estrogen balance. This interconnectedness also explains why studies on cold exposure and hormones often yield mixed results. Cold plunges are not a magic solution for testosterone but can support overall wellness when paired with exercise, good sleep, and a healthy diet. How do cold plunges affect muscle recovery? Can cold plunges help with weight loss? However, it’s important to avoid cold plunges too close to bedtime, as the initial stimulating effect may interfere with sleep. People with certain medical conditions, such as heart problems, high blood pressure, or Raynaud’s syndrome, should consult their doctor before trying cold plunges. Go cold enough to gasp, long enough to shiver. There is no optimal time and temperature because it depends upon your prior state of cold training. I can't tell you the last time I was in a cold bath more than five minutes. And if I'm going there as part of like a sauna, back and forth, hot, cold, contrast, it's two to three minutes. That is the more used to you get it as you cold train, you get less of a cortisol response. So cortisol levels that are low coming up is good. Hot showers are thought to negatively affect both sperm production and sperm count, although more research is needed. However, like the testosterone debate, scientific backing is limited. Since realeasing their personal findings, they have had an influx of people reaching out to them claiming that they’ve had similar results. The research on their effects on testosterone is still emerging, and individual responses can vary significantly. After your session, let your body warm up naturally instead of immediately drying off with a towel .