I think this stuff can increase T:
Basically, anything anabolic or that helps prevent catabolism, esp. in combination with weight training.... and adaptogens which help with stress (such as Ashwaganda in Anabolic Sleep, but there are others, for example ginseng). Stress is generally bad for sex hormones, and not just for men. But yeah. Cortisol and test. tend to have an inverse relationship.