Multiple sclerosis can limit the type and the duration of exercise. Evaluate your strength and weaknesses. Be creative -- try to get yourself moving (sitting and or standing) to decrease the risk of additional disorders or diseases.

http://commonhealth.wbur.org/2015/12/doctors-prescribe-exercise-to-all-patients

"Physical activity has been show to reduce the risk of heart disease, stroke, diabetes, certain cancers, osteoporosis, cognitive decline, [hypertension and obesity] even depression, at minimal cost and with virtually no side effects," says Dr. JoAnn Manson.