Because our bodies aren't built capable of running as fast as, let's say... a cheetah. Cheetah's bodies are formed in a way to make it easier to run faster.
Not yet.
Ostrich
no you just cant run so fast as your legs wont move that fast
I dont think there is a limit to the speed a human can run.
taser it. it works for humans, why not horses?
it cant run fast if it is fat
No a human cant run so fast it could run out of its skin. First of all you cont run out of your skin that's fake.
Yes, armadillos can run quite fast, faster than most humans.
What do you mean by super fast? Look at the fastest man in the world and if he can't run super fast, then no one in this day and age can :) xx
Run Run as fast as you can, you cant catch me im the gingerbread man!
because they are distant ancestors of humans and many humans can run fast
maybe because of the wind current