Exercise Library
Pull In (on Stability Ball) Waist Max
Balancing your shins on a stability ball in a plank position, you roll the ball toward your chest by pulling your knees in. The unstable surface forces the core to control the ball's path on every rep.
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Primary muscle
Primary: Rectus abdominis Secondary: Hip flexors
Equipment
Bodyweight
Category
Abs
Track This Exercise in the App
Log your pull in (on stability ball) waist max sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.