AMRAP = 'as many reps (or rounds) as possible' in a fixed time window. A staple structure in CrossFit, conditioning circuits, and capacity testing.
Mechanism — Time-capped output forces real intensity-vs-recovery negotiation. Different time windows train different systems — 30-60 sec AMRAP is alactic/anaerobic; 5-20 min is aerobic-glycolytic mixed; 30+ min is aerobic.
Use case — Conditioning testing (re-test the same AMRAP every 6-8 weeks for objective progress), workout structure, and finishing capacity blocks. Standardize technique standards or the metric is noise.
Caveats — Form degrades under fatigue. Don't AMRAP complex barbell lifts. Pair with strength work, not as a substitute for it.