Jack knife

Start in a push up position with the weight over the shoulders. Keep the feet on the middle of the ball. Pull the navel inwards, bring the knees in towards the chest. Keep the hips lifted.

Relaterade träningsfilmer

  • Half twister

  • Pike

  • Plank around the world

  • Thread the needle

  • Ball dips

  • Hamstring curl

  • Scissor legs

  • Burpee to shoulder press