Thanks to Pete the Fireman (aka Pete the Triathlete) for finding this for me.
Understanding Lactate Threshold Heart Rate Training by Marty Gaal.
For those of you doing endurance training, this is a way to push up your lactate threshold. That's the point at which your body produces more lactate than it can clear away. The result is fatigue. If you can push that threshold up, you can go harder, longer.
【2次締切迫る】5/21 JBJJF 第8回中国柔術選手権 | 岡山武道館
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