Just like the swallows returning to San Juan Capistrano, some things occur every year at about the same time. For me, I usually get a really nasty cold every February that makes me feel like crap for a week or two. Not being the sort of person who takes antibiotics at the drop of a nose (uh, people, colds are viral infections, so antibiotics don't do squat to help), I resign myself to feeling like crap for a week or two and cope with drinking plenty of hot toddies and, uncharacteristically, bundling up in a half-dozen layers of clothing. If my nose gets really congested, I blast my sinuses with a neti pot (I imagine somebody out there is aroused by that video). The neti pot, while pretty off-putting, does the job- it really flushes the garbage out of your head.
Thankfully, I live in the Northern U.S., so I don't have to worry about brain-eating amoebae infesting my neti pot. That's one less thing we have to worry about. If you're concerned about the presence of brain eating amoebae in your water supply, this map will show you where the brain bashers live- their range is indicated by the red color.