After 16 weeks of regular strength training, the participants saw a significant decrease in their testosterone levels. (erikavolkfitness.com)
When the dose is taken over 5 mg per day, a slight decrease in testosterone levels can be observed. (bosspeptides.com)
This research, which tested men's saliva for testosterone levels reported that new fathers showed a 30 percent decrease in testosterone. (pinkymckay.com)