The Lactic Acid Myth

There is no lactic acid in the human body. That said, the burn we feel during hard efforts has a lot to do with acid.

A triathlete dressed all in black grimaces while riding his bike
An athlete pushes through lactate buildup during the bike leg of the Sestroretsky A1 Triathlon. Photo: Shutterstock.com/Pavel Shchukin

There is no lactic acid in the human body. That said, the burn we feel during hard efforts has a lot to do with acid.