uggh my aching knees

It could be a lot of things...I would suggest going to a chiropractor to see if you have something wrong with them. If not, you could try different shoes, Dr. Scholl's inserts (or the off-brand, they're cheaper and work just the same, I've heard)...

I have the same issues! It sucks let me tell you . Try good streches and motrin, advil, and ice and heat . Sometimes ice works and not heat . Sometimes its the other way around ! All else fails go see your Dr you might have an issue that needs to be addressed!

Um...you need to ease off the gas...running 4-5 days a week is too much, unless you've been training for a couple years.

Right now you need to go get fitted for and buy a good pair of running shoes designed for your feet. (find a running store, not a shoe store). Second you need to not do any running for the next week. Rest, take it easy, maybe swim. After a week, and with your new shoes, go out for half your normal distance and run a minute/walk a minute. If you knees still feel ok, add a little more the next day. After 1 week of rest and 2 weeks of build up, you should be back to 5k THREE days a week. After that, DO NOT add more than 10% TO YOUR MILEAGE IN ANY WEEK (YES YOU CAN ROUND). 15k = 16.5 (17)k - 17k = 18.7 (19)k - 19k = 20.9 (21k). Break that distance into 3 days per week. Once you get to ~10k for each day, you can try and add a 4th day, BUT KEEP THE SAME MILEAGE INCREASE. 30k (3 days/10k each day) = 33k (8k for 4 days). Once you get to 10k 4 days per week, then you can look at changing some of your days to include shorter but faster runs or longer but slower runs. STILL NEVER INCRESASE YOUR WEEKLY MILEAGE BY MORE THAN 10%.

Hope your knees get better quickly. It can be fustrating, but don't do too much too soon or you'll never continue...:)