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In endurance sports such as running, cycling, or triathlon, one physiological concept plays a central role in performance: lactate threshold. While VO₂max often receives most of the attention, lactate threshold is frequently the variable that better predicts endurance race performance. What is lactate threshold? Lactate threshold refers to the exercise intensity at which lactate begins to accumulate in the bloodstream faster than as the body can clear it. Below this point, th