How to Do the Side Jackknife
Add the Side Jackknife to a workout plan built for you. NYUS builds a workout plan from your goal, body and schedule. It is in early access on Android: join the list to get in.
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💪 Abdominals🏋️ Body Only📊 Beginner🏷️ Strength
How to perform it
Use controlled form through a full range of motion, bracing your core throughout.
Muscles worked
The Side Jackknife primarily targets your Abdominals. You'll need body only.
Make it count toward your goal
Random sets rarely move the needle. In NYUS, the Side Jackknife slots into a plan built for your goal — sets and reps set in the plan, logged in two taps, and folded into a weekly check-in that adjusts your calories, macros and step goal.