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Plank crunches

Exercise preview

Plank crunches

Advanced30 secondsNo jumping

Muscles worked

Abs

You need

No equipment

How to do it

  1. Start in an elbow plank, forearms on the floor and your body in a straight line from head to heels.
  2. Draw one knee up along the side of your body toward your elbow, crunching through your waist, then extend the leg back into the plank and repeat with the other knee, alternating sides.
  3. The plank holds everything still while the crunch does the work - your hips stay low and level throughout, resisting the urge to pike up as the knee travels.

Exercise from Darebee, used under licence.