If you or your legs feel a little dead after the ride, then take a day off or do an easy recovery ride. Listen to your body. There's pain and there's discomfort. If you are in pain, that's your body telling you that you did too much and you need to stop, but if it's just a little discomfort, then that's your body telling you that you have to take it easy and allow it to recover, so if you feel totally fine with no discomfort, then your body is telling you "YIPEE! WE ARE HAVING FUN!"