This exercise is designed to be performed with a Body-Solid Foam Roller or Premium Foam Roller.
Lie face down and position the foam roller directly under the thighs. Bend the elbows so that the forearms are flat on the floor. The feet should be suspended above the floor.
Keeping the abs drawn in and core tight, use the arms to gently roll forward and back—the roller should move from the pelvis to just above your knees.