For anyone else who's accidentally watched the video and feels uncomfortable with the gore, immediately go do a high focus activity to not let it settle in your mind, can be something like Tetris.
Thank you for posting this. I accidentally saw the video and found it extraordinarily disturbing. Appreciate the advice, seriously.
Any evidence it really works though?
Anecdotally, it worked for me, but I'm not really in the mood to look up the literature right now.
Worked for me. Played some chess online.
I've seen a paper or two supporting the claim, but I remember that I didn't put much faith in them at the time. Seems plausible enough though, and probably wouldn't hurt anyone so until there's a ton of of high quality evidence for it'd still be worth a shot.