I'm 40 this year, didn't train to be a climber until I was 26, but for the last 11 years I've been one of the lead climbers, it sure is taking its toll, sore knees from using the spike's for hours on end, sore back from pulling stupid shapes to get out some limbs to avoid the overhead powerline, the list goes on, I can see me getting a few more years in then having to find something else to do.