Instructions
Seat yourself comfortably at the edge of a solid chair, with your back straight and unsupported. Keep your feet planted about hip-width apart
With your hands placed gently behind your head find a stable comfort point with your glutes. This is the starting position
When ready, exhale and using your core for control, raise one knee towards your chest
At the same time, bring the opposite elbow across your body until it meets, or comes close to the raised knee.
After each crunch, return to the start position inhaling as you do so, bringing your foot back down to the ground