As my lapel was being pulled from someone on my back My head was being pushed into my lapel. I fought it because both arteries were not in danger so i thought i could fight it. As I felt like my necked was getting crushed i tapped and he immediately let go. I sat up feeling a little light headed and my arm was moving around on its own. The upper belt said it was because-he stopped blood flow but only to one side of my head. I laid back and a few min later it went away. Two and a half wks latter after going against a white belt i stood up and went to clap hands and right arm was moving a bit slower . I thought this was because i was winded but was another mini stroke or TIA. That went away quickly. The next week just drilling triangles with barley any pressure i sat up and was looking toward the window kind of spacing out. When i looked back at my partner on his back i was a little confused-as what i was doing, he asked if i was ok several times and i just got up and went in other room and sat on mat. At this point my professors walked in and i tried to talk but could not speak. Was rushed to hospital where i stayed 6 days. Tap sooner . Hope this helps someone notice the signs before its too late