I have been running a small martial arts class for a long time now. This is what is observed. Often a student of other member of the club will express that a headache is killing them but they will try a class anyway. I will get the class up and running with plenty of exercise. These members really put an effort into the class and they are heavy breathing and sweating. The real neat thing is 99.997 percent of the time that headache that was so nasty totally vanishes.
So instead of a paraliminal, experiment with spring forest qigong exercise. It will do a few things for you if the headache was stress related the exercise should greatly reduce the stress. And if it is related to sinus, allergies your body temperature may raise and your sinus may very well start to drain which will give relief, and best yet you may even get a runners high with plenty of feeling good endorphines.
