Sleepwalking occurs when people engage in activities like bathing, brushing teeth, calling others, or making food while asleep. They may also move items or walk pets. This can lead to injuries from falls or accidents. While the exact causes are unknown, sleepwalking tends to occur when someone is in a deep sleep with slow brain waves, and may be triggered by patterns or fever. The author recounts a time they sleepwalked and walked into a glass door, showing the potential for harm.