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Isometric upper-body lumbar crunch

Exercise preview

Isometric upper-body lumbar crunch

Intermediate30 secondsNo jumping

Muscles worked

Lower back

You need

No equipment

How to do it

  1. Lying face down.
  2. Place your hands behind your head and perform a lumbar contraction so that your chest lifts off the ground.
  3. Hold this position for a set amount of time.

Exercise demonstration from Calisteniapp, used under licence.