This week ELLE's exclusive workout video from Adidas and Frame shows you how to do a Core Jester. What are you waiting for? Watch the video and #workit.

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Stand  with feet hip width apart ensuring your hips are centred and facing forwards.

Bend your elbows and raise your arms up so your hands are level with your ears, alternate bringing your knees up to meet your elbow on either side until you have done this ten time son each side.

Be sure to check out the adidas women Facebook page here for more #fitspiration.