"Kava was shown to reduce the proliferation of androgen (testosterone) receptors (maybe)"

[VictoriousSpoon]

Interesting read re: Kava & Exercise performance http://www.comfsm.fm/~dleeling/health/kava-impact-exercise.html

The author has decades of experience with kava and is an avid runner- he conducted an informal analysis of his running performance and kava drinking habits.