hot bath and massage do help. but if those are not available, try giving the sore muscles a bit of an excercise. i don't agree with the other guys who say you should give them some rest. when i just started to go the gym i used to have terrible muscle soreness and it lasted for a few days. and my trainer suggested that if i had a sore biceps i should just take something moderately heavy and do a few pulls. first i thought that he was crazy because it hurt as hell just to move around. but when i actually tried i found out that it's a great and almost immediate releaf.