Anyone else's body really sore after sex?

My muscles get so sore in the days after every time. Working the days after having sex is hell. I'm trying to run around (I work in fast food), but my muscles are so sore and tired from having sex that I cant move as quickly and dont have full rotation in my hips without pain until two or three days later. Sex is something I enjoy having, the soreness afterwards just sucks. Ijust wanna know if this is something that goes away with practice and is just because I dont work those muscles often, if it's something that just is a fact of sex, if its common, that kind of thing.