This is a question I've been pondering.
We all know muscles need around 72 hours rest to fully recover. We all know that rest is of vital importance to our health, to gaining new muscle and strength.
I hear of people going to the gym 6 times a week and I also hear of people that go twice a day, such as one around lunch time and another during the evening. Now if you are supposed to give yourself some needed time to rest, then what exactly are you achieving with twice a day or 6 times a week. Yet, they seem to be progressively growing muscles regardless, is this thanks to supplements/roids or am I thinking this all wrong (yes it is getting late).
If you overwork a muscle you could decrease it and not increase it. With lack of rest in between workouts you could decrease performance and muscle increase. I know there's probably an easy explanation but I really cannot think of it at this hour lol. Your thoughts please.