Stop running for a while. Regard the headache as a message, and think about changing your lunch. If you change your habit and the headache vanishes, you've learned something and found a way to improve your health. That the condition afflicts mostly females begs us to hunt for some meaning. Fibromyalgia is a system breakdown, sort of like what would happen to your car engine if you floored the accelerator with the transmission in neutral.
Stressed men tend to get heart attacks and ulcers, or languish in depression.
Stressed women might be vulnerable to fibromyalgia. Stress First, let's talk about muscle pain. You're seven years old and one of the household gods is angry. You just might get hurt. You brace yourself for the worst.