Alison Kreideweis sat nervously on the edge of a treadmill at Finish Line Physical Therapy in New York City, on Dec. 1. She’d volunteered to help demo a new wearable device that measures an athlete’s ...

If there is one stat that every cyclist wants to know, it’s their “VO2max.” Just what does this secret number mean? And more importantly, why is it a pretty near meaningless red herring, and what ...

Add Yahoo as a preferred source to see more of our stories on Google. woman on a treadmill doing a lactate threshold test During intense or prolonged exercise, muscles can feel like they’re burning ...

Make way for another wearable. Launching sign-ups for its alpha program on stage today, here at TechCrunch Disrupt SF, is a startup called Humon — which is building a real-time lactic acid threshold ...

Muscles make Lactic acid deliberately, producing it from glucose, and they burn it to obtain energy. Everyone who has even thought about exercising has heard the warnings about lactic acid. It builds ...