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 ...

A solid metric to know, considering its influence on race performance. Many coaches argue that lactate threshold is one of, if not the, biggest performance predictor. It determines how fast you can ...

Here’s what your LT1 and LT2 say about your performance potential and how you should be training ...

Q. I am a young cyclist trying to race semi-pro in the national mountain-bike series. I need to improve my VO2max and lactic-acid threshold. What sort of training should I do? - Evan, Bay Area, Calif.

Runners have long feared lactic acid. We've always viewed it as something that tires us out during a race and makes us sore afterward. In high school, I can remember my buddy Jeff propping his legs up ...