Did You Know You Can Get Sore Knees from Workouts?

Did you know you can get sore knees from workouts?

Yesterday I began to have a very sore knee on the leg opposite from the one I've had surgery on. I thought it was due to overcompensating and having to bend down only using one leg (that leg). As I found out today, both my knees are sore. I really felt it when I got down to do my push ups again. I think that doing the knee push ups and the ab crawl from the other day (on a towel on a tile floor) really made my knees sore! I did not do them today!