建议读下‘砖家’意见...
https://www.quora.com/Does-climbing-up-or-down-stairs-have-any-adverse-effect-on-your-knees
尤其是:Noel Gill
"If you never had knee problems, then it's absolutely fine. Climbing the stairs gives your legs a great exercise. However, I wouldn't advice you to climb 15 floors every now and then."
似乎是针对你的情况专门解答的。