i'm 52 years old and been cleaning windows for 7 years. I had tennis elbow and golfers elbow (through working on computers for 20 years, and it's not funny). Since I have been using a lighter pole, (Xtreme 3, 22 foot) the pain in my elbows has become much less. I don't even notice it now. My friend is a carpet layer and his knees are knackered, another of my friends is a plasterer and his bones are not good (always working in a damp environment). You young guys love saying how you go to the gym and how strong and fit you are and that's great. If you spend all that time going to the gym and spending money, then spend a bit more and get the best equipment possible. Hopefully in the long term, you'll see the benefits BEFORE YOU GET OLD!