How to Alternating 90/90 Crunch
You Should Feel This: Abs
Exercise Families: Trunk Flexion
Equipment: Yoga Mat
Trainer: Ashley Steele
Lie on your back, with your hips and knees flexed to 90 degrees. Interlock your fingers behind your head.
Curl your torso and pelvis toward each other, rotating your torso toward the opposite knee, while maintaining a 90° hip and knee angle.
Slowly return to the starting position and repeat on the opposite side. Continue alternating for the specified amount of time.
You should feel this working the abs and obliques.