Exercise library / Core
Crunch (machine)
Core · Machine
Sets, reps and RIR
Sets3
Reps10 to 20
RIR1 to 2
Stop the set when position breaks, not when the muscle burns. Quality of position is the whole point.
RIR means reps in reserve: how many you could still have done when you racked it. RIR 2 is two short of failure.
Muscles worked
Primary: Abs.
Estimate your one-rep max
Epley's formula, from a set you have actually done. It is an estimate, and it drifts above eight reps, so keep the input between one and twelve.
Enter a set to see the estimate.
What it is called elsewhere
- Norsk Crunch (maskin)
- Svenska Crunch (maskin)
- Dansk Crunch (maskine)
- Deutsch Crunch (Maschine)
- Español Crunch (máquina)
- Italiano Crunch (macchina)
- Português Abdominal (máquina)
- Русский Скручивания в тренажёре
- Français Crunch (machine)
Related core exercises
athlate logs this exercise, keeps the numbers, and tells you what you lifted last time.