Bowser has grown gigantic after Kamek enlarged him with a magic spell

Bowser then uses it to train in his gigantic training room, lifting weights, hitting the punching bag, and running on the treadmill

after his training exercise, he heads to the shower room to freshen up. You happen to show up as he’s about to get in the shower

he don’t seem to mind you showing up, and he invites you to watch him clean up