If your drug test is close man, the last thing that you want to do is run! Like Roll It Up said, when you run, you're going to burn fat, and this is where all of the THC metabolites stay. You will bring out all of these metabolites into your piss. Also, cranberry juice does help your urinary tract, but it's also considered a masking agent and you will be caught for dilution. If you drink to much water, you can also get caught for duluting because the more you pee, your creatine levels get lower and the labs will know this and also your pee will be very clear. The best thing I can recommend for you is, Quick Fix. This is synthetic pee, made in a lab. It has the same properties as real urine. It worked for me just last week. So, if you don't have anyone watching you take a pee, I sugget you use this. For more info, go to www.youreinluck.com or go to a place where you can buy pipes, bongs, detoxs.