BOSU Cross-Body Crunch
Lying back on the half-ball, crunch diagonally bringing an elbow toward the opposite knee; alternate sides.
How to do it
Setup
Lower back on the dome, feet flat, hands behind the head, elbows wide.
Steps
- Crunch up and across, elbow toward the opposite knee.
- Return to the dome with control.
- Alternate sides each rep.
Common mistakes
Pulling the head with the hands: the hands only rest there; lead with the ribs. Just moving the elbow: rotate the shoulder, not the arm. Losing the dome: keep the lower back glued to it.
Breathing
Exhale on the crunch, inhale on the return.
