I enjoyed PE classes in elementary school. It was a nice break from the tedium of the classroom. I hated PE in middle school though. I went through puberty earlier than most of my peers and PE class just advertised the fact that I was different from my peers. I felt really awkward changing in the locker room and my PE teachers did things like embarrasing those who weren't naturally athletic (people like me). It was all about who was most athletic and who could win sports. There wasn't any encouragement to exercise outside of class.