Exercise Library
Jackknife Sit Up Waist Max
Learn how to perform the Jackknife Sit Up Waist Max with proper form, the muscles it works, and common mistakes to avoid.
Primary muscle
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Equipment
Bodyweight
Category
Abs
Track This Exercise in the App
Log your jackknife sit up waist max sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.