Our first Christmas together, 10 years ago, I would do the edge of the entire roof by squatting and essentially hopping down to the next clip. The last 2-3 years??? After clipping 5-10 feet, I have to stand, stretch and get my equilibrium together!. Today? I did about half of the outside lights and called it a day. To think about 8-9 years ago....I did my entire yard (Talking hedges, edging, weed eating, some raking , mowing and blow off the drive and patio and THEN did ALLLLLLL of the outside lights WHILE consuming beverages! I started with the roof today and afterwards, my knees and legs were tired. Even two beverages did not help afterwards.