It's Crunch Time! 2-Week Challenge to 100 Crunches
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Lie on your back, and lift your legs and arms up so they are extended toward the ceiling. Lift your upper back off the floor, reaching your hands toward your feet.
Lower your legs toward the floor while reaching your arms overhead, keeping your shoulders off the mat and lower back pressed into the mat.
Repeat the crunch motion to complete one rep.
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