Intermediate exercise
Side Jackknife


Technique
How to perform Side Jackknife
- Lie on your right side with both legs straight and stacked, your right arm resting on the floor for balance.
- Place your left hand lightly behind your head without pulling on your neck.
- Lift your torso and both legs toward each other, bringing the left side of your rib cage toward your left hip.
- Keep your feet together and your chest facing sideways rather than rolling into a face-up sit-up.
- Lower your torso and legs under control, then repeat the lateral lift.
- Finish your repetitions and repeat on the other side.
Programming relevance
Muscles involved
Primary targets: External Oblique, Internal Oblique.
MuscleScoreRole
Calisthenics graph
Progression relationships
These relationships describe graph position, not personal readiness.