Find Your Lactate Threshold

What's that you may be asking? LT is the point at which lactic acid accumulates in your blood faster than your body can process it—causing a drop in performance.

• Training below your LT builds aerobic capacity.
• Training above it builds speed.

How to determine your LT: (1) Warm up, 10 minutes. (2) With a heart-rate monitor on, run or cycle on a flat course as fast as you can for 30 minutes.(3) Your LT is your average heart rate for that period.