My secondary school did "Walking" as an option for PE.
Needless to say I took it, alongside most of the other less demanding sports, just for fun lol.
I did walking, Orienteering (which was walking, but with slightly fewer scumbags), table tennis, tennis, badminton, football and basketball. (I was stuff at basketball and didn't want to do it, but had to as I joined the school part-way into the year and every other sport for that term was basically full).