Here's a theory on why you seem to be stuck with a PERMENANT COLD this winter.  You're making yourself sicker because you're blowing your nose wrong. 

--Yes, you can blow your nose wrong.  A doctor in London says that when you blow BOTH nostrils into a Kleenex as hard as you can, you can shoot some of your mucus into your sinuses.  And that can lead to a sinus infection. 

--The RIGHT way to blow your nose is to gently blow each nostril individually.

--He also says using a decongestant spray actually will make you feel better.  Decongestant sprays work about four to five times more effectively than decongestant tablets.