Well, when I was that age I would have hated to be forced to jog, bike, do jumping jacks/push ups etc., even though I jog/bike several hours every day now. Apart from not enjoying those things at the time, the idea of having to do what my parents said has always put me off. In fact, I usually refused to do things I liked if my parents said I should do them or made them compulsory. (I was a difficult child 😉)
I didn't enjoy "ordinary" PE back then either (the usual collection of team sports and general athletics), and I was much more stubborn than my completely-inactive parents too when they forcibly enrolled me in Little Athletics (javelin, discus and shotput were OK -- I like throwing things -- but not much else), gymnastics, judo and (grrrr) ballet 🙄. They couldn't handle the frustration/pain/aggro/etc. of trying to get me there for more than a few weeks.
But I chose to do "advanced" PE in high school because it had more interesting sports like squash (incredible fun!), ice skating (also fun), archery (way cool but rather dangerous with me around), horse riding (enjoyable but they didn't let me go as fast as I wanted to), skiing (unfortunately my family moved interstate before I got to try that one, but I think I would have enjoyed it), and so on. I started doing quite a bit of those outside school too, but after moving interstate my new school only had ordinary PE and the sports I liked weren't accessible where I lived so I became rather lazy again.
In my opinion the trick is to encourage them (vigourously if you like, but in a way that makes it more like their idea than something forced by "the olds"😉 to find activities that they'll enjoy. Consider whether they prefer doing things alone or with others when picking sports to subtly direct them to too. (I generally preferred things that I could do by myself, and I didn't have enough patience with other people for most team sports.)
Other than the sports I've already mentioned, the ones I did voluntarily and enjoyed in my lazy days were swimming, sailboarding, rowing (coxed 4s) and inline skating.