Streamer exaggerate their reaction on everything:

(»° _ °«) S-s-s-s-s-streamer? Could you please, um, roleplay, so when your character takes damage... you um, p-pretend y-you take damage...! A-arigatou gozaimasu (>/////<)

Speedrunners trying to get a new PB/WR

Iv started trying not to press or squeeze the controller harder. These hands ain't getting any younger.

I will always lean and tilt, make sound effects, throw myself back upon death, etc.

I dodge proyectiles when playing Doom II

Ok, but like half the time I say "Ow!" because I hurt myself, it didn't really hurt that much and I was just surprised. Same reaction, reacting to the event and not the actual pain. If I really did actually hurt myself, it's usually followed by either silence, obscenities, or a short silence followed by a very loud obscenity.

You forgot people who say oof when other people get wrecked in a game.

When I build stuff in Space Engineers, I tend to find myself leaning to look around and under stuff sometimes.