The Abdominal Wheel is not only an abdominal exercise, but requires a large number of muscle groups to achieve moving from a plank position to the fully lengthened position with arms extended in front. The transverse abdominis and the internal and external obliques are the main target of this training, along with much of the upper torso and upper limbs: the erector spinae, latissimus dorsi deltoids, pecs, biceps, and triceps. The rolling out movement eccentrically targets the lats and deltoids, and the rolling in concentrically targets the core. A coordinated muscle activation is required particularly as the wheel is unbalanced with a small surface area. The exercise can be progressed from beginner to advanced depending on the starting position and support offered.