Chu Gai, I'm as ancient as you and recall many a playground day where Dodgeball was a required game at recess, and during the day of the week that you were forced to run in PE, the butch lesbian teacher sure didn't give a shyt if you had a wussy "ailment" like "Asthma" it was all in yer panzy head and you better pick up the pace or she'd run you over in her golf cart.
Oh yeah during the summer we went outside, played kickball in the street, flashlight tag at night (or kick the can) but we sure as heck didn't stay indoors, I mean why, the TV only got five channels, cell phones were dreams thought of in Star Trek (with Kirk) we had walkie talkies with a range of 20 feet run on 9 volt batteries and your parents would kick you out of the house and tell you to just be back before dinner (they didn't care where you went, just as long as you didn't break a leg and if you did, it taught you a damn good lesson didn't it. )
Snacks were an apple and if you didnt like it, you could starve. You got in trouble with horseplay, the coach would tell you to take a lap, and if you were real bad, the principle would beat you with a wooden paddle (with holes for stopping wind reduction) and then you'd get home with a sore butt and the old man would tan your hide again for getting into trouble in the first place. Forget swearing, who wants to taste a soap bar.
The punishment made you realize that the adults are in charge and you better do what they say and no matter what you thought you better do it and enjoy doing it. PE class was required not optional and you pretty much had to show up with a cast on and maybe, just maybe the teacher would give you a little leway but that was dependant on the cast location. On your leg do pull ups, on your arm, you can run.
We lived without computers, cell phones, 1,000 channels, and if you wanted to see a movie, you saved your allowence or had a buddy pay and he snuck you and ten of your freinds in the back door.
Kids today have no idea how good they have it (sigh I sound just like my old man) now if you'll excuse me I have to remember walking five miles to school, uphill both ways with no shoes in the snow.