As the humidity increased in my apartment, my headache decreased. In a manner of minutes it went away. I couldn’t believe it.
I researched it and it turns out that low humidity levels can contribute to headaches. I had been having a headache off and on for days. I didn’t think much of it. I rarely get headaches and because I am in between receiving and sleeping on a comfortable pillow, I figured it was a side effect until my comfy pillow comes in.
If you are having headaches, buy a humidifier. It might solve your issue.