Prone jackknife crunch (v sit ups)


How to Do:

  1. Start by laying flat on the ground on your back, with your arms straight over your head, and your legs straight ahead with your toes pointing up.
  2. From here, perform a crunch so that your arms come to your legs.
  3. Bring your legs to your body, and your arms to your legs.
  4. Come back down and repeat for repetitions.


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