ah siao, in fact I've cut down a lot on running so my stamina is not what it used to be. Last time used to run around NUS 2-3 times a week, 45 min each time, from Arts fac to Pasir Panjang to KE7 hall, Medical fac, Sci fac, the Admin building and back to Arts fac... now dunno still can or not. Now I run the threadmill once a week, for 30min... other days I cycle or use the elliptical machine cos I also worry about my knees. So far no problem though. Interestingly, I read in a book about running that it's not running that wears out your knees, it's INCORRECT runnnig... hmm.