- PrimarySecondaryTertiary
- Difficulty
- Beginner
- Force
- Pull
- Grips
- None
- Mechanic
- Compound
- Start in a plank position with the TRX straps adjusted to mid-calf length. Place your feet in the TRX stirrups.
- Keep your abs engaged, and bring one knee towards your chest while keeping the other leg extended behind you.
- Switch legs, bringing the opposite knee towards your chest while keeping your abs engaged and your back straight.