madman
Super Moderator
Daily fluctuations in testosterone have not been shown to drive muscle protein synthesis. However, supraphysiological steroid doses are anabolic. Many testosterone-boosting agents are on the market, but Dr. Phillips states they are ineffective, and it's better to focus on resistance exercise. In this clip, Dr. Stuart Phillips outlines steroid biochemistry and why he thinks testosterone boosters don't work.
3:20-4:37 (Normal diurnal variation in testosterone)