Each can if BB'ing reps and limited sets are used. This is very advanced training, meant for men with a lot of hands on heavy lifting gym experience. Do not think of buying either bands or chains unless you know how to use them to the fullest advantage. Some of that stuff is a lot of bucks. Either is bested preformed in a power rack, standard racks, "A" frame, etc. And with good training partners to spot. If the need is great for muscle mass and power than you may consider joining a PL'ing gym in your area. Or at least get around guy's who may have a little experience in that style of training. Good Luck.
