For me...it takes constant effort to stretch and do PT exercises. I have gotten back almost full ROM...but if I let up on the exercising at all then I lose it again. I have exercises and stretches I do...but if I forget to do them and have an RSD limb immobilized for even a short period of time (even 10-15 minutes doing something as simple as holding something without flexing my hand/fingers) then I get the stiffness, swelling, and sometimes my hand will even claw up so I can't move my fingers at all. It can take hours to get things moving...days of constant (painful) work to get things back to where they were before.