Definition
The exercise intensity at which lactate begins accumulating faster than the body can clear it, causing that burning sensation. The invisible line between 'I can sustain this' and 'why did I sign up for this.'
Example Usage
I crossed my anaerobic threshold at mile 2 and spent the rest of the race in oxygen debt and existential crisis.
Origin
Exercise physiology term from the 1960s-70s, though the exact definition remains debated.
Fun Fact
Anaerobic threshold typically occurs at 80-90% of max heart rate for trained athletes, though everyone experiences it as 'that point where breathing becomes screaming.'
Source: Exercise physiology and endurance training
Related Terms
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