Has your life ever flashed before your eyes?

Mine did, once. It was many moons ago, though, when I was about 10 so I don’t really remember it that well. It happened at the community pool, but I don’t remember the circumstances surrounding it. Probably some kid held my head under water and wouldn’t let me up. My life literally flashed before my eyes and later on, since I lived, I thought it was very cool.

Have you ever experienced this?

Also, anyone know what causes this and why?