It broke my heart to see the devastation brought upon the family of a friend who allowed the diagnosis of Parkinson's to become a decree for a sedentary lifestyle. One booklet describes and illustrates beneficial exercises that are easy to follow. Exercise should always be done when you are well rested, because movement is less restricted. Clothing should be loose and comfortable, and shoes should have good support. Sometimes several short sessions in a day are far better than one session where rest has not been included.
Exercises fall into four major categories.
While exercising, one should maintain normal breathing and move slowly, avoiding forced or bouncing motions. Singing is another one of my favorite exercises. More power to you if you sing in the shower or join a church choir or local chorus as I have done. Singing strengthens the diaphragm and gives the lungs greater capacity. It seems to cut down on the amount of mucus that often collects from lack of expansion.