Two years ago, as I was climbing a hill, someone was waiting on top of that hill for his friend to finish his climb, they were in their late twenties and I was 53. As I reached the top before his friend, he said to me: "You have lot of puff old man". Found it a bit insulting and completely ignored him. That was the first year I started riding after many years of sedentary. I climbed that hill at 13-15 km/h then. Now I climb it at 21-23 km/h. What would he say then! I'm 8th over all out of 122 Strava rider and 1st in my age group on that climb.