I will quote the text that S. refers to so that we have it here in Usenet
permanently for future reference.

5. Clear your stuffed nose!

Forget Sudafed. An easier, quicker, and cheaper way to relieve sinus pressure
is by alternately thrusting your tongue against the roof of your mouth, then
pressing between your eyebrows with one finger. This causes the vomer bone,
which runs through the nasal passages to the mouth, to rock back and forth,
says Lisa DeStefano, D.O., an assistant professor at the Michigan State
University college of osteopathic medicine. The motion loosens congestion;
after 20 seconds, you'll feel your sinuses start to drain.

From:

http://www.menshealth.com/cda/article.do?site=MensHealth&channel=health&category
=other.diseases.ailments&conitem=98f183b403517010VgnVCM200000cee793cd____&page=2