Sore muscles are to be expected after a quality workout. You may also experience some joint soreness during your workout or 20-30 minutes after. Beyond that, you may want to be more cautious. "If the next morning you're having joint pain that you can attribute or associate to your workout or activity the day before, you've probably pushed it too hard," says Kaeding. Also, if the soreness is getting in the way of normal daily functioning – like going to the bathroom or putting on a shirt – you should give it some rest.