Lately I've been hearing a lot about hormonal cycles and how they change throughout the day. From what I've heard, testosterone seems to be lowest in the afternoon and highest in the morning and evening. I would think hormones like insulin, growth hormone, and cortisol could have some effects as well.
For the purpose of gaining strength and muscle, what is the optimal time of day to lift weights and why?
Edit: not sure why this is getting downvotes. Any feedback?