If you're getting sponsored and the money is going to prostate cancer charities, then kudos, and good look.
However, if its just to 'raise awareness' then I think that's stupid. Awareness doesn't need to be raised, that doesn't help anything. Its not like its some obscure disease that no-one's heard of, one that only effects poor people in foreign countries. Those are the problem's that we need to raise awareness of. Cancer we just need to raise money.