I was a scrawny, clumsy kid and hated gym class, but I was also one of the best distance runners there. I liked running because it was just me competing with myself, but naturally the class spent two weeks doing that, and the rest of the year doing hockey or football or wrestling where bigger guys could victimize me because I was easy to knock over and too clumsy to handle a soccer ball. I stopped taking gym as soon as it was no longer mandatory, because it basically ruined physical activity for me.

God forbid it be run as an actual educational function - promoting physical activity and helping young people discover their strengths.