@Glitterbiscuits
Put me of exercise for years.
If I had done some sort of aerobics or yoga I'd have loved it.
But netball in the freezing cold?
And country dancing? What the fuck was that all about in the 1980s?
Ahh, you got country dancing too, did you?
For us it was always the last week of term just before Xmas. Supposedly as a fun thing to do 
Normally, we had PE separated from the boys, but this was the one time we had to do PE with them. It was hell.
I hated PE. Same as others, it was the communal showers, not being one of the sporty ones as I couldn't run well. However, I was ace at defence in hockey, so made the team for that (I didn't have to do much running, could tackle well, and could hit the ball away even better). Was about all I could do, although I could do discus and shotput in summer.
And yes, the teachers monitored periods. I had particularly heavy ones, and they were irregular, so the teachers thought I was putting it on. Mum came to the school and stopped that nonsense, though.
The PE lessons were an exercise in how to put children, especially girls off any exercise for life.
I'm 52 now, and am finally getting a grip on exercising for health. I walk a lot and have lost a stone in the last few months just from walking everywhere, as I was furloughed and now working from home.
As I'm well overweight, I'm self conscious about my body, so I haven;t signed up to any classes, etc, yet. I've started a really gentle yoga programme from YouTube, but I would like to give Pilates a try if anyone has any recommendations for an easy YouTube beginner channel I can follow?
Next Spring, after I have lost more weight, and the weather is better, I'm planning to try to C25K and see how I go.