Remember how I said I had issues with the 14 stairs in my house. I live in Hamilton Ontario, cost There are several sets of stairs that go up the mountain here, and we happen to have a set very close to our house, My Partner and I decided to give them a try only the bottom half. All 290 of them YES 290 stairs. Guess what nooooo problem. My knees did not scream at me to stop. So two days later we did it again and then again today. Who knows maybe we will do the top half that would add on another 200 stairs.