I do body isolation exercises, similar to the nautilus concept but without the equipment. I start and end with slow but steady calf stretches and then begin to exercise by first isolating my neck with head turns, chin tucks, etc. and work my down to shoulders, arms, wrists, rib cage, waist, hips, legs, etc., by using various stretching exercises. I have built up so much strength in this manner without having to worry about adding bulk muscle and I've found that this type of exercise has increased my ability to be considerably more supple! I've also found that I am now better able to overcome some old injury issues as a result of increased flexibility and can mount easier, etc.