From fifth grade onwards, I hated gym.
Fifth grade it was called 'Movement', and the teacher for it was a pregnant lady that just screamed at us all the time and made us do what I suspect was supposed to be interpretive dance. When she left for maternity leave, we were stuck with a music teacher that didn't speak English well and her room was full of roaches.
Sixth and seventh grade we had a teacher who spent most of the double period not doing anything because she wanted us to be quiet (when you have 4+ classes' worth of girls, that's not going to happen). Also, the gym was either freezing or sweltering year round, but near the end of seventh grade we did have a teacher that not only knew what he was doing, but was nice, engaging, and let us have fun.
Eighth and tenth grade (I believe it was anyway) was horrible. The gym was very tiny, and had pillars throughout the middle of the gym, and for the most part all we did was basketball and volleyball. The teacher was terrible and often yelled, and didn't give a shit about what students did to one another. Under his watch, I was hit multiple times with a hockey stick, tackled and strangled, and had Axe Body Spray sprayed right into my face.
One day he snapped and just screamed at us as he lined us up against the wall for most of the period. After he was done screaming, he went into the girl's room and saw one of the girls naked.
It's not that I don't like the idea of gym, it's just that you need to have a teacher that knows what they're doing, and you need adequate space & equipment to do it right as well.