It readily subs in for weights and other heavy equipment, as the stretch and pull exercises provide a natural way to contract your arms and legs - and it adds many of the benefits of weights to activities that couldn't normally make use of a barbell, kettle, or dumbbell, and without the need to carry around all of the extra metal.Stretching your body during a warm up, dance and pilates, massage your muscle and finish off with an amazing and safe assisted stretch; Long-term use can beautify the curve of the human body, strengthen muscle lines, it also has a strong fitness effect.