About lanky galra… Do you think their joints work in their own way? I mean, we only saw then moving and bending their joints in a very human way (or maybe I didn’t pay much attention to their joint work??), but THINK of then bending and stretching in ways that instinctively makes our brain go NOPE. Weird creepy moving galra. In the dark. Coming for you. (nopenopenopenope)
I mean, I don’t know if they’d be able to dislocate their joints- especially if I’m right they’re primarily built as sprinters, having knees that flex backwards would probably take a bunch of tendon and ligament adjustments that would be a liability without obvious gain. But this does give me the idea of them being, in general, very flexible- since as a species they seem more predisposed to lean muscle.
Even relatively stocky silhouettes like Zarkon, Sendak, and Prorok have that whippy quality to them. Zarkon is about the most powerfully built galra we’ve seen and comparing him to a body type like Hunk’s, Hunk clearly has a lot more in the core (and no, I’m not just talking about fat, I’m talking about his ribcage) so I wouldn’t be surprised if, Zarkon’s supernatural assistance put aside for the moment, Hunk pound for pound could lift more weight than Zarkon.
My rough thoughts is that comparing humans to galra- a good galra athlete compared to a good human athlete, the galra would have much better acceleration and speed. It’d be like getting in a running contest with a cheetah- they’re built to run, and fast, so as soon as the starting gun goes off they’re practically out of sight and the human’s just there like “oh… okay.” I also imagine they’d have certain adaptations that make it harder for them to hurt something- sprain or twist an ankle- because their joints are more flexible. And with the general size difference they’d also just have more leg to work with.
But if you have the human athlete start at a walking speed, and the galra sprint until they’re tired, the human would pass the galra long before they (the human) gets winded- a tortoise and the hare kind of situation, and we’re the tortoise.
That’s not to say galra categorically have awful stamina, but I think in general there’s the idea that humans are adapted more for endurance and galra are adapted more for speed. This also feeds a headcanon I have that humans observably patch themselves together pretty quickly compared to most species, and with pretty good results. Conversely it seems the galra invest a lot in prosthetic technology, which would make sense if more kinds of injuries for them could be potentially career-ending and it’s a lot easier to end up at “you can keep the arm, but it’s never going to work the same way again… or we can amputate it and put this cool metal one in instead”
Also because, with the assumption that looks notwithstanding, Keith is set up much more like a typical galra than a typical human, this would make a hilarious amount of thematic sense considering his whole ability set is “the fastest, impressive attack, can’t take hits very well” and if he’s from the zippy sprinter race that’s not quite as hardy as humans, that’d just fit him perfectly.