Do-un's withdrawal issue?

I saw in the article that Do-un had announced his withdrawal, so I was wondering what was going on...

I got hooked by the title haha

There was a scene on *I Live Alone* where the *Mudoraji* members ran a marathon.

How can you interpret Do-un saying that marathons don't seem to suit him and that he probably won't do another one in his life as a declaration of withdrawal?

The title is too provocative.
It seems the pear and bellflower gathering was really tough for Do-un.
He even ran a marathon of over 12km, and the broadcast was legendary, but it seems Do-woon's stamina wasn't legendary.

I hope we can have a get-together where we eat lots of delicious food next time. Haha.