PROSOURCEFIT CORE BALANCE DISC - Crunches; Crunches Instructions

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Lie on the oor with knees bent, with the balance disc under lower back and
hips, and arms behind your neck and head for support.
Contract abs, crunching up toward knees and keeping chin lifted.
Stop when body is at approximately 45 degrees, then lower toward oor until
back is straight, shoulders slightly off the oor.
Repeat 15-20 times.
CRUNCHES