IM NOT ASKING FOR ADVICE.
I was practicing cross collar chokes (2 reps per partner then switch) for 20-30 mins, I tapped after roughly five seconds each time (I never went unconscious).
The next day I was too dizzy to look at screens, had headaches, worse memory, processing and focus, unprovoked anger, anxiety and little energy for anything. I started napping often, which I didn't usually do.
This happened ten weeks ago. Previously I was a hard working person, but since then I have become dull and unproductive. It has affected my university perfomance. It's getting better, but still recovering.
Coaches say 30 seconds of blood interruption is needed to damage the brain, but when blood flows back after it's stopped, that causes damage, one article below says only four seconds is needed to go unconscious and cause an injury, another says only seconds to cause injury.
Im aware there are studies that have scanned the brain of practitioners and found no damage, but you could lose your mind from CTE, and it wouldn't be diagnosed until your brain was cut open.
Im not asking for advice. I know what happened to me and can't think of any other causes. Just warning others about chokes and brain scans are not adequete to disprove brain damage.
https://pmc.ncbi.nlm.nih.gov/articles/PMC5991620/
https://www.domesticshelters.org/articles/health/how-strangulation-affects-the-brain