There are many reasons why women’s calves are swollen after sex, such as excessive physical exertion, poor sexual posture and so on. 1. Excessive physical exertion: the body will consume a lot of energy during sex, if the calves for a long time, it will lead to the accumulation of local lactic acid, metabolic products can not be excreted in a timely manner, which will lead to the phenomenon of calf swelling after sex. 2. Poor sexual life posture: women have sex for too long, poor posture, too much activity, etc., may lead to calf muscle injury, thus leading to the phenomenon of calf swelling after sex. There are many reasons that lead to calf swelling and pain after sex, and if you can’t get relief for a long time, we suggest that you go to the hospital in time to get a clear diagnosis and then give standardized treatment.