Experts clear up the confusion on lactic acid, the burning sensation you feel in your legs during hard efforts, how to ...

A burning sensation after sex can be a normal reaction ... penis, testicles, and lower abdomen or back. It can be caused by many factors, including complications with the urinary tract and STIs.

Lactate as the byproduct of intense exercise is often to blame for the burning muscle sensation ... low zone 4 with a rest period that is as long as it takes for your heart rate to come back ...