I recall seeing in some book a picture of identical twins, one with PD and one without. The one with the PD had a pronounced slouching, sagging posture. I'm starting to get the same way. I feel very droopy, as if there are heavy things on my shoulders and on the back of my neck that are weighing me down. It feels like my body wants to cave in. Sometimes it's a struggle to sit or stand up straight. Does anyone have experience with or know of any exercises to counter this downward trend? Phil