why do we have butt cheeks i dont understand why did we evolve this way

what use do butt cheeks have 

oh my god I HAVE THIS KNOWLEDGE

fun fact: butt-cheeks are one of the things that make us superior to other animals okay note that other apes do not have butt-cheeks

okay don’t quote me on this because I only did sixthform-bio and I’m sure of forgotten loads of stuff but here’s the down-low

back when we were evolving from ape to human, one of the most important things that happened was when our spine started meeting our brains at a sort of 90 degree angle instead of like 45 degrees, which meant that we could straighten up and walk on two legs which was a pretty rad development

except alas oh no our muscles weren’t built to allow us to walk around on two legs because that requires a sort of twisty motion of your hips as opposed to whatever the fuck it is everything else does AND SO ape-people started evolving with longer, narrower waists so that our bodies could twist with every footstep and we could strut along the fashionable catwalk that is neanderthal evolution

but then once this had happened, people realised that we had an advantage over other animals and we would be better at chasing and killing them but we weren’t very good at running

so that’s when we developed the glutenus maximus which is a really badass-sounding name for the muscle in your derriere which helps us to support our spine in an upright position so we don’t get tired, and helps the legs to rotate nicely so that we can run, and has a nice big fat storage around it to help us get energy so that we can run

and that, basically, is the butt-cheek

tl;dr - butt-cheeks were the result of thousands of years of natural selection so that we could run fast and slaughter things

thank you so much for such a fabulous, informative and detailed explanation on the evolution of the butt

i feel enlightened and empowered to know my butt is for such a worthwhile purpose, so thank you 

i love this butt science post so much

Also for squeezing

fun fact: that fat on the cheeks? Incredibly useful source of energy to that muscle during endurance exertion, when glycogen is more or less depleted; carries the advantage of being right there and also serving to pad the important muscles in case of injury and provide a comfortable cushion on which to sit. Fat pads do things, and while we’re most used to thinking of individual fat pads in terms of their structural uses, often they function by providing easy sources of local power for sustained use.

Humans actually have quite a lot of intramuscular fat relative to some other species–I’m used to mice, which don’t bother, for example; neither do rabbits, which are so infamously lean that dining too heavily on them can be bad for human health. Of course, neither species relies much on endurance. Fast twitch muscles, which are good for sprinting and darting, tend to be powered by glycogen availability even within species; by contrast, slow twitch and highly oxidative muscles that are used over sustained exercise are generally powered by intramuscular fat.

(I am reading an interesting thesis tonight that also notes that relative to horses, dogs have more intramuscular fat in hindquarter muscles–exactly what you would expect to see in the context of intramuscular fat as a local fuel for endurance running, since dogs are–like humans–adapted for long distance persistence hunting.)

Next time you slap that jiggly ass, stop and reflect on how important and useful ALL its components are! In a very real sense, humanity’s ass defines us nearly as strongly as our heads.

So what I’m hearing is that having a dump truck ass is literally Evolutionarily Advantageous. Even great-great-great-grandma Ungalug back in the Pleistocene woulda been hunting for a slice of that Cake. Help I’m a Miocene megafauna trying to escape predation but these Hominid ass-cheeks are dummy thick and the resonant clapping of their fatty pads keep driving them onwards beyond the limits of my exhaustion

This is the ass of a killer, Bella.

Woagh

Not one person knows how tumblr works.

WE DO INDEED!!! :D

This is so beautiful to me

WAIT! I can make it worse!!

I can make it more worser!

mafuyu with short hair :3

Personally if miku kidnapped me through song and told me I should join a band and learn about friendship I would agree instantly regardless of my own personal opinions idk what the prosekai characters are on. “Noo I don’t wanna” you’re saying that to hatsune miku? She died for you on the cross.

Miku riso! 3 color print. I put references to vocaloid classics that I grew up listening to. Will be available at #lightboxexpo ! I will be putting leftover prints on my etsy after the con :)

Fire tornado soap bubble

This is that eldritch shit. Still here for it, though.

Back in my day this shit would get you tied to a pole and set on fire

Back in my day this

shit would get you tied to a

pole and set on fire

Beep boop! I look for accidental haiku posts. Sometimes I mess up.

Can't wait to see zeus go from "make sure i never see this one again" to offering percy immortality and then getting hit in the face with A Guide To Parenting And Other Family Issues By Perseus Jackson™

real

I just realized why ORV puts such a focus on "hey all trauma is trauma, it's never minor" in such a way we all remember it.

This is the story for Kim Dokja's fragments. And some of his fragments will live happy lives. Some will lives just as dramatically unhappy as his. But many will live different kinds of tragedies, have different kinds of traumas. And we can't just go and say "well some like Kim Dokja have it worse", all trauma is trauma. And we all deserve the same kindness and understanding of that that Kim Dokja eventually gets from his companions.

Jason: We're going to have to split up, like in Scooby Doo.

Jason, to Dick and Damian: You guys are Scooby and Shaggy. You can search the bathrooms.

Jason, to Tim: Velma, you get the spooky looking fridge in the basement.

Tim: What? Why am I Velma? And why do I get the... dubious looking device?

Jason: Because only Velma would say "dubious device". Tim gets the spooky fridge in the basement.

Damian: And what does that make you, Fred?

Jason: Bitch, I'm Daphne.

WE’RE GONNA GET

-TYSON

-GROVER IN A WEDDING DRESS

-THALIA

-CIRCE’S ISLAND (GUINEA PIG PERCY)

-THE PRINCESS ANDROMEDA

-THE SIREN SCENE

+ SO MUCH MORE IM SO EXCITED

BSD SEASON 1: FISHEYE COMPILATION

TOTAL: 15.5

6 Atsushi // 4 Lucy // 2 Akutagawa // 1.5 Dazai // 1 Kunikida // 1 Higuchi

Controversies: Dazai wailing at the loss of the young detective woman was received with divided opinions regarding its fisheye-ness, was given 0.5 point.

Episodes featuring fisheye shots: 8/12

Average per episode (featured): 1.94

Average per episode (total): 1.29

Honorable mention:

>all fisheye posts<

Epilogue