Check out the nip proposal I wrote. This nip can cover all of these use cases. Exercises and workouts are completely customizable via a tagging system, and with Nostr they’re reusable, shareable and modifiable. A box could publish a WOD and share it to their customers, create leaderboards, from the results, reward badges, zap, etc. I’m having fun building Powr but I’m even more excited to see what people can build with the spec I wrote. nostr:npub1xr8tvnnnr9aqt9vv30vj4vreeq2mk38mlwe7khvhvmzjqlcghh6sr85uum even added some comments showing how it can be used to track runs which is a fantastic use case.

https://github.com/nostr-protocol/nips/pull/1816