Before you roll up to the line this week at your local race or group ride, take 15 minutes to give your bike a nice wash down. You know you'll feel better and your bike will be much happier when it's clean. Here's a brief video on how to clean your bike and get the dirt out of all those hard to reach places.
Quick caveat.... most people will not use (let alone own) a pressure washer to clean their bike. A simple hose with running water should suffice and be nicer to your bearings over time.