Side Jackknife
A side-lying crunch that lifts the top leg and the upper body toward each other at the same time. It trains the obliques through side bending from both ends.
Primary muscles
- Obliques
Secondary muscles
- Abs (Rectus Abdominis)
- Gluteus Medius
- Sets
- 2–3
- Reps
- 10–15 per side
- Rest
- 30–60s
How to perform
This information is general fitness guidance, not medical advice. Stop if you feel pain and consult a qualified professional.