cheerleading. or marching band, if you can play an instrument.
id say cross country is the easiest overall. endurance and speed are the only skills you need.
holy shit i am beast at badminton. no joke. i beat my PE teacher. hahahah. i guess its hard to be bad though.
@what?- hahah yeah i did. in 8th grade. he was this crazy norwegian guy with a mustache.