I have heard that because THC clings to fat cells, one can get rid of some from the body by doing a lot of fat burning exercise.

Also I have heard that one should drink a lot of water the day before. When providing for the test, let a little urine go first, then begin to fill the sample cup. It is said, the first urine to be released is more concentrated.

I hope what I pass on here was the truth when told to me. I also hope you have good luck.