5. Jet lag
Jet lag can add another trigger to your headache-causing equation. Missed sleep, dehydration, and disrupted mealtimes during air travel can create the perfect storm for a pounding head.
The fix: Drink plenty of water before, during, and after your flight. To avoid additive-rich airplane food, Lay recommends bringing your own, and eating at your regular mealtime. When you arrive at your destination, get some fresh air and plenty of daylight to help your body adjust to the new time zone. And avoid shut-eye until it’s dark in your new destination.