Jackknife Alternative
12 substitute exercises that target the same muscles
Arms Apart Circular Toe Touch
Mountain Climber Plank
Squat Thrust
Mountain Climber Slide with Towel
Leg Over Head Calf Stretch
Lying Side to Side Knee
Back Kick Heel Touches
Criss Cross Elbow to Knee
Lying Bicycle Crunch
Swing Back Knee Drives
Twist Stepback
Plank Feet Tap
Criteria used to find exercise alternatives
Same target muscles
We rank alternatives highest when their primary muscles exactly match. i.e: same target muscle, different movement.
Full muscle overlap
Secondary muscles and synergists are scored too, keeping the overall movement pattern close to the original lift.
Equipment considered
Equipment overlap nudges similar-kit options up the list. But we include different-equipment alternatives too so you're never stuck.
What the Jackknife trains
Primary Rectus Abdominis
Secondary Hamstrings Obliques
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