How to do Reverse Crunches
Lie on the ground in a traditional crunch position, feet flat on the floor and hands underneath the head, elbows wide.
Press lower back into the floor and pull in the belly button to lift feet off the floor. Bend knees at a 90-degree angle, keeping them together.
Using core, draw knees toward chest so that tailbone raises off the ground. Simultaneously perform a traditional crunch, lifting shoulder blades off the floor and using abs, not hands, to lift head and shoulders.
Slowly lower shoulders, hips, and legs to return to the starting position. Stop when feet are just above the floor.
