Probably the question I get asked most frequently, my response about my knees-"they are as knobby as they were in high school". Please know how grateful I am that I have had very few running related injuries. My advice to all runners, especially newbies is to take your time, walk, slog- that is slow jogging. Make it fun, then you will stick with it. My motto- Start off EZ, then back off.
I attribute my longevity with running to consistently running 2-3 minutes SLOWER than my 5 K race pace. Taking rest days and making my running my play. Nick