Abdominals
Glutes, Hamstrings, Lats, Shoulders
Place loaded barbell at end of bench.
Kneel on bench, facing barbell.
Grip barbell overhand, shoulder-width.
Engage core, keep back straight.
Slowly roll barbell forward along floor, extending arms and hips.
Lower torso towards bench.
Roll out as far as possible with control.
Engage abs/lats to pull barbell back, returning to start.
Repeat.