One of the best pieces of equipment I found is the Tony Little's Gazelle - low impact walker/strider. It is a real workout yet no strain excellent for anyone suffering from stiffness. I use a stationary bike sometimes too. The gazelle firms up the butt, all of the leg and tightens the waist and tummy. And the arms are also moving. QVC has it on sale or check the classifieds for second hand ones.