Sleep on your back. Lighten up your lighting. This constant flickering, though not noticeable, fatigues the brain, causing headaches. If you think fluorescent bulbs might be causing your headaches, try out a table lamp with an incandescent bulb for a couple of days. If that makes a big difference, replace fluorescent lights with incandescent lighting or table lamps.
Posture plays a key role in tension headaches.
Avoid leaning or tilting your head to one side, since your neck muscles contract when you're in these positions. Avoid high-Altitude headaches. You may help avoid a headache by taking 3,000 to 5,000 milligrams of Vitamin C the day before you leave and one each day when visiting. When caffeine helps a headache. Having a cup of coffee or tea with your aspirin provides better relief than aspirin alone.