If I sit in a chair, one that enables my feet to comfortably be flat on the floor. I bring my feet up onto tippy toes. When I try to put my feet flat down again in a smooth motion by muscles can not let me do it smoothly they can only do it in a jerky unsmooth way. I can bring my feet up to tip toes smoothly but going down is jerky. I can not remember the terms used for when your muscle (say for example the calf muscle) relaxes or lengthens in a controlled way.Mine seem to have lost this normal level of function and are so tight like they cant relax or lengthen like they did before I got sick. It is almost like clonus in MS but not as severe as what I have seen first hand in people with MS. I am only just starting to read the muscle stuff on here and will have to catch up with everyone else. But I am wondering about this specific movement do others have this too?