I blacked/passed out in class while watching a video clip on YouTube titled "Columbine's Boy In The Window". I'm not sure if it was the video that triggered it, and a couple of my friends suggested that it was a heatstroke, but it was relatively cool in the room... I ate breakfast that morning, and felt perfectly normal before it happened. When it started, I felt a little nausious, and dizzy, then I felt stoned, and it felt like I was light and heavy at the same time, and I remember there being a lot of pressure... Then I don't remember what happened after that... Then when I came to, I was in my desk, and my teacher was shaking me and saying my name... I felt really hot and cold at the same time, and I was extremely sweaty, and I couldn't hear myself talking, but could hear others... I went to the nurse's office, and she suggested that I get evaluated at the doctor's office. He suggested I go get blood drawn and a Cardiogram, and I did, and they didn't say that anything was wrong or not... Also, my mother is a nurse of 23 years, and I told her what happened, but the only thing she could come up with was that it might have been low blood sugar, but I ate a breakfast composed of a banana and two chocolate pop-tarts, and nothing to drink... So, I would really like to know what the hell happened, because it wasn't only embarassing, but it was frightening as well... So, any advice or suggestions would be greatly appreciated... Thank you for your time...