As far as the physiology is concerned, the Androgen receptor is subjected to circadian rhythm alterations, as well as thermoregulation. In essence a person that rips it at the gym, would experience increased thermogenesis secondary to tissue repair and increased metabolism. When you go to sleep, naturally occurring hormonal balance reduced the core temperature (very slightly, even if you feel warm subjectively) - but that cannot take place when the Androgen receptor is constantly stimulated secondary to high affinity binding by different compounds.
Since the body cannot reduce temperature, the hypothalamus goes into "What the fuck" mode, and increases sweating to reduce core temperature to the original sleep related temperature that is desired.
That is the physiology itself, which is obviously subjected to inter-individual genetic differences, diet, training and training schedule, and of course - the dosing and compounds as well as their binding affinity to the receptor arrays they influence.
I'll let the big guns infer based on their experience, all I have is the theory, which shouldn't be a far cry from practicality.