Perform a hard set, reduce the load, then continue with clean reps. Best on machines, cables, dumbbells, and safer isolation exercises.
Use for muscle-building finishers. Avoid on heavy squats/deadlifts for most clients.
Use the method to improve the result, not just to make the workout harder. The client must still move well, recover well, and understand the purpose.
Set 1: 10 hard reps. Drop weight 20-30%. Continue 8-10 clean reps. Rest 90-120 seconds.
Month 1: learn the format and keep effort controlled. Month 2: add a set, round, or slightly more load. Month 3: increase intensity only if form, recovery, and confidence are strong.