[tachyonbeam]

It's also true that young gymnasts retire in their mid-to-late twenties. They get injured a lot. I'm not sure what they get for their efforts, besides medals and prestige.

There's definitely value in getting out of your comfort zone, but that doesn't have to be hard. IMO it's only worth pushing yourself hard if you really believe in something. Don't do it just because others are pressuring you to do so. Rest when you need it.