AbMat or Swiss ball? Both allow a fuller abdominal crunch than the floor, but stability, ball placement, loading and technique can dramatically change the exercise. Here is how to use each one properly.
An advanced abdominal exercise demonstration for trainers who want a more challenging core option for clients with the right strength and control.
A quick coaching video explaining why performing crunches over a Swiss ball can change the movement and create a different abdominal training stimulus.