Using an ab machine, such as a decline bench or exercise ... For example, a decline workout bench allows for adjustable incline positions that are great for targeting the lower abs, and also ...

VIBESPARK Adjustable Weight Bench 600lbs 4 in 1 Foldable Workout Bench Set with Barbell Rack Resistance Bands Multi Function Strength Training Bench on sale, Goplus 4 in 1 Folding Rowing Machine AB ...