BOSU Crunch
Lying back on the half-ball, curl the torso up and lower with control.
How to do it
Setup
Lower back on the dome, feet flat and wide enough to balance, hands behind the head.
Steps
- Curl the ribs toward the hips.
- Keep the lower back on the dome – it is a short arc.
- Lower slowly until the abs stretch over the ball.
Common mistakes
Sitting all the way up: the abs give the work away; keep it a short crunch. Yanking the neck: chin off the chest. Feet sliding: plant them wider.
Breathing
Exhale up, inhale down.
