I agree Pilates in its classical form is amazing. I have shifted to strength building and stretching and am amazed at how much strength and muscle you can gain at 53. Big impact on lower back and general health.Joseph Pilates developed his exercise concepts to strengthen bedridden soldiers while they wasted away in hospital wards. The work focuses on strengthening the abs, legs, arms, back, etc., while stretching the lower back muscles. Try a few reformer classes—maybe you get hooked