does hiit exercise decrease testosterone

High-intensity interval training (HIIT) can actually increase testosterone levels rather than decrease them. According to Andrew Huberman, high-intensity activities like sprinting, which mimic the neural activity of moving heavy weight loads, are particularly effective at boosting testosterone. However, endurance exercises that extend beyond 75 minutes may lead to reductions in testosterone due to increased cortisol levels 1.

Additionally, it's worth noting that vigorous exercise lasting too long (beyond one hour) regularly is also not hormonally beneficial and might be disruptive 2. So, the key lies in maintaining a balance in workout intensity and duration to support optimal hormonal health.