True, but I'm 195#, and I do plenty of sprinting, climbing, etc., and I'm over 5000 miles on my current chain and still just shy of 1/16" stretch/wear in 12" of chain. I'm not in a really wet climate so that may be a contributing factor, but one thing that has really increased my chain life is switching from ProLink to Rock-n-Roll Gold lube. I know, I know I never thought a lube made that much difference either, but this one sure has. I used to get about 2500 to 3000 miles per chain (that's about 3 chains per year for me). Used according to lube mfrs. instructions my drive train stays a lot cleaner too.