The easiest way I've found to do it is to pick up some Excedrin (or the generic equivalent). It's basically just aspirin and caffeine. Go as long as you can in

The easiest way I've found to do it is to pick up some Excedrin (or the generic equivalent). It's basically just aspirin and caffeine. Go as long as you can in the day til you start getting a headache, then take 2 pills. Do that for a week. The second week, take 1 pill. By the end of the second week, you won't even need the 1 pill, you just won't get the headaches.