Begin on your back with your legs straight and arms at your sides, palms facing down.
Keeping your hands on the ground the entire time and core engaged, roll up to sitting, then past your knees toward your toes (similar to Forward Fold).
Roll back down to the mat slowly, one vertebra at a time. This counts as one rep.
Complete 10 reps.
If keeping your hands on the ground the entire time is too difficult, try straight-leg sit-up.