Okay, I am a pretty skinny guy so I have been trying to bulk up a little. As you all should know, muscles get bigger when they tear, and rebuild. That is what you are doing when working out. Usually every time you work out, your body is sore, and the reason for that is lactic acid buildup. You should not workout EVERYDAY because your muscles need time to repair/rebuild. So that is why most people work out one day > rest the next day > workout the next day, on and on. But my question is, are you still supposed to be working out on the days you are sore? Sorry if I got any information wrong!