Howdy!
If you have problems with congestion you might want to take a look at the
Neti Pot.
There is some general information available at:
www.healthandyoga.com/html/neti/jalanetiinfo.html.
The basic idea with neti is to rinse out your nose with salt water by tilting your head to the side, pouring saline solution into the top nostril and letting it flow out the lower nostril.
It works wonders!