When a migraine headache takes hold, resistance, as the evil rulers say, is futile—at least, for all but the most heroic among us. But before a headache springs full blown, you may be able to avoid or dial down the pain by taking evasive action. Not every tip listed here works for everyone, and change doesn't come overnight. But experimenting with these suggestions may help you avoid getting a headache, or better manage one if it does arrive.