Gym Uniforms

I can not find the answer anywhere on google. Only perverse things and blogs on anime.
I know that school uniforms anime compared to real-time Japanese schools are shorter skirts and whatnot. But the girls have really gymnastic uniforms that look like this? Can someone please answer? x_x

School uniforms girl you see on Japanese high school girls are held marine .... And yes they really wear these to school ....

Gym uniforms ?.... Go to YouTube and check ?....

Gym uniforms are usually just shorts and a shirt.

some do and some do not .. it also depends on the school it ..