Ok, I was in a tournament. Ate well, warmed up well, was hydrated, etc. So around my third match, opponent was on top side control. The next thing I know my legs start shaking like I was having a seizure, but waist up physically and mentally I was fine. I couldn't stop it, but it stopped after I guess 30 seconds or less. I didn't feel any heavy top pressure that would cause this, no pain, no sub in progress, no lightheadedness, etc. Has this happened to you? It was sooo weird. Thanks in advance for answers.