well testosterone release is largely mental and environmental as well, but that is really off subject...
Again, from what I understand (which is not everything, so I could easily be wrong, I'm just trying to understand) acute testosterone release following intense workouts is not so much the important part. Rather, it is the ensuing lactic acid, gaba, endorphin, GH, Insulin, amino acid, and test fluctuations that occur over the following twenty-four hours or so that cumulate to increased synthesis. Yes, a vast majority occurs while sleeping, as that is when GH is expressed most, but there must be endocrinological cascades that precede and lead up to that expression, right?