Exercise library · Core
Machine Crunch.
Weighted machine crunch that loads the abs through trunk flexion.
BeginnerMachine

The numbers
Sets
3–4
Reps
10–15
Rest
45–75
Muscles
Primary
Rectus abdominis
The play-by-play
How to do it.
- Step 01
Adjust the seat and grip the handles or pads
- Step 02
Set the chest against the pad
- Step 03
Crunch the torso forward against the resistance
- Step 04
Round the spine to contract the abs
- Step 05
Squeeze at the bottom
- Step 06
Return slowly to the stretch
What separates good from great
Pro cues.
Move from the abs, not the hips
Control the return phase
Avoid pulling with the arms