For my outside reading, I read an article in Scientific American called Why Migraines Strike. The article was about migraine headaches. It said that migraine pain stems from the dilation and stretching of brain blood vessels, leading to the starting of pain-signaling nerves in your brain. The article also says that migraines can be set off by alcohol, perfume, dehydration, exercise, stress, weather changes, seasonal changes, allergies, lack of sleep, altitude, flickering of lights, and hunger.(77) The four phases of migraines are prodrome: difficulty concentrating, yawning, fatigue, and sensitivity to light and noise, aura: visual illusions of sparks and lights, often followed by blind or dark spots in the same configuration as the earlier bright hallucinations, headache: excruciating pain accompanied by sensitivity to light and sound, nausea and sometimes the pain affects half the head, and postdrome: persistence of sensitivity to light and movement, as well as fatigue and difficulty focusing. Some people call the postdrome the "zombie" phase. This is what I learned about migraines.