exercise performance

I am getting a daily dose of cialis and I am wondering what is the best time to take it. I usually work out from 2:00-4:00 pm. If I take it at noon will I get benefit during my workout? Will there be enough left in my system to benefit me and my wife at night? We go to bed at 11:00.

ABSTRACT Perception of red color is associated with higher testosterone concentration and better human performance. Thus, we evaluated the acute effects of wearing colored-lens glasses on the YoYo intermittent endurance exercise test 2 (YoYoIE2) performance indicators and testosterone...