Lois has a headache. The headache started one hour ago. She doesn’t know why she has a headache. She never gets headaches. She never gets sick. Lois is a healthy woman. Where did her headache come from? Was it something she ate? Was it something she drank? She doesn’t know. She wants her headache to go away. She does not like to take medicine. But her head hurts so much. She went into her bathroom. She opened the medicine cabinet. She found some aspirin. She took two aspirin with a glass of water. Maybe the aspirin will help her headache go away.