Anyone use those teeter spine things? It looks like a chair, but you lie down and then somehow end up upside down. Supposedly good for your spine. I don't have room for yet another piece of exercise equipment....has anyone been able to recreate that result using something else? I have a Total Gym...wonder if I could just "hang on a slant" with my head down and get some relief? I agree sewbizgirl.....I think my spine needs help!