Do Ice Baths Improve Fertility in Both Men and Women?

Cold exposure isn’t just about toughness—it may also play a role in fertility and hormone health. Andrew Huberman explains that while excess heat can harm sperm quality, cold helps indirectly by reducing testicular temperature, potentially boosting testosterone and improving sperm count. For both men and women, short daily cold immersions or showers can also regulate cortisol, improve mood, and support overall hormone balance. The key? Keep it uncomfortably cold but safe, and use it as a deliberate stress tool for long-lasting benefits.