Lumbar isometric crunch
Lumbar

- Lying face down.
- Place your hands behind your head and perform a lumbar contraction so that your chest lifts off the ground.
- Hold this position for a set amount of time.
Sessions
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Biceps ∙ Triceps ∙ Abs ∙ Lats ∙ LowerChest ∙ Calves ∙ Glutes ∙ HipFlexors ∙ Lumbar ∙ Quadriceps

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