Lactate has taken a beating over the years. Blamed for soreness, fatigue, and that jelly-leg feeling after a brutal set. We’ve all heard the myth: "Your legs are toast because of lactic acid." Wrong.

Lactic acid was once believed to be the cause of sore muscles after exercise. It’s not. Another substance, lactate, contributes. However, what causes muscle burn and pain is more complex. Staying ...

Lactic acidosis occurs when a person’s body either produces too much lactate, or underuses lactate. Lactic acidosis can be caused by conditions such as heart disease, HIV, cancer, and more. Lactic ...