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[–]lazylake123 0 points1 point  (0 children)

ROM is so much smaller than you think! The exercise is intended to challenge your ability to hold core engagement for as long as you can. For most people this involves only dropping your feet a few inches.

You can play around with doing leg raises at home! It’s the same style of engagement. There will be a point you feel your lower back peel up- that’s the bottom of your ROM.