As too my experiences having this PD for about 8 years now,as I grow old,the effectivity of my medicine which was prescribed by my Neurologists,is that,my movement like in balancing tends to loose as days passedby,especially if I do a lot of activity like hammering,doing laundry,my tremors is very visible...The very reason,I move and does other chores slowly..,BASED on my experienced we should not waste and spend so much TYM doing hard,because upon the intake of medicine we become active,but after the expiration of the effect of medicine, we become robot....