( ABDOMINALS ) — CORE
Crunch
Abdominals
How to do it
Sit on a stability ball and walk your feet forward until your lower back rests on the ball. Crunch upward by contracting your abs. The ball creates a greater range of motion than a floor crunch and also engages stabilising muscles.
Log the Crunch in Reysa
Plan it into your week and watch the trend — free on iPhone.
