So, I played a game on Inferno, and it went quite well. On the first round, I'm left in a 1v4 with a glock, but manage to clutch it. Later on there's also one 1v3 and one 1v2 and I win those too.
After that first round clutch I was shaking and I assume that it was the result of an adrenaline rush. The symptoms of an adrenaline rush include: heightened senses, increased strength and performance (the latter is more meaningful here) and feeling jittery or nervous. (Source: https://www.healthline.com/health/adr...)
And that shaking pretty much lasted the whole game, and it was awesome, I was on fire :D
This video is recorded from a demo, which only has half the tickrate of the MM servers, 32, so excuse if my shots look less accurate than they should. :P