The Empowered Boost process. 3. Try 2 3-packs If you have been looking for a light, medium and heavy one for your arms in addition to a looped one for your legs, we suggest that you opt for a 2 3-packs. For your band workout, you can try out a one 3-pack resistance band. This will be good for your band Grow Extra Inches workout. However, if you are in need of one for your arms and legs, then you should prefer two sets.