Her brain was thrown into shock by the sudden an violent change to her body. It had to learn to interpret completely alien nervous signals and how to control the new body.
 
What is it like to have a fifth limb?
 
Try imagining that, four times, and twenty more times for each finger and toe, then the limbs you’re used to having - cut them off and now all you have are these new ones.
 
She struggled to survive those first few minutes, but fortunately the paramedics soon found her.

In with Mr Good Air  
Out with Mr Bad Air

@Takashi.0  
Yeah, modern weapons also probably contributed to the decline of human stamina.

@Background Pony  
Plus weapons.

@PwnyPony  
This is actually how ancient humans hunted for food. Chasing after it until it couldn’t run any more.  
MODERN HUMANS…. They have the bone structure, and the potential, but most of them…. Well…  
They have less shakin’ and more bacon.

Just don’t look at the background, ok?

@Background Pony  
That is actually interesting but something tells me that it is not true after seeing a few Grand Nationals.

also, OMG THE GRASS HAS A MOUTH!

Fun Fact: Humans can run/walk/play sports(apparently) far past the point that an animal would have collapsed from exhaustion.

Oh, this site has a “breathing” tag. Lemme check that.  
(five minutes later)  
SWEET MOSES WHY ISN’T THERE MORE ON THE BREATHING TAG

@Itsthinking  
They call the town in EqG Ponyville, right? And Ponyville appears to be situated near the middle beside Canterlot and flanked by mountains…. Denver?

god her waist is so thin…  
hell her head is bigger then her whole body and her legs are twice as big as that.

A fish out of water.

it’s in L.A.  
every show is in L.A.

So it’s somewhere mountainous? Is this Canada?