It uses just one dumbbell to strengthen the core and back and there's nothing close to a sit-up involved. CAP Barbell make good-quality home weights and the 15lb pair have just been reduced to its ...

Step up to a loaded barbell, keeping the barbell close to your shins, standing with feet shoulder-width apart. Tighten your abs, push your butt back, and bend at the waist, lowering until your arms ...