Probably one of the dumbest newbie questions...
After each workout, basically one of three things happens to my muscles:
1. Muscles get sore
2. Muscles almost get sore but not quite (I can "feel" the workout in the muscle but it's not painful at all)
3. Nothing, no different feeling than usual
1 happens every time when I resume lifting after a break, even if it's a 1 week break. It sometimes happens if I radically change the way I train some muscle.
2 happens typically when I change the workout routine. More rarely, it happens when I resume training after a break.
3 happens after I do the same exercise for a while without changes. If I resume training verygradually_ after a break it sometimes happens too.
Am I correct to assume that muscles grow or get stronger a lot in case #1, grow or get stronger a little in case #2 and don't grow or don't get stronger at all in case #3?
Or is it a lot more complicated than that?