Downtime actions apart from the ones presented under are probable. If you prefer your character to spend his / her downtime accomplishing an exercise not lined listed here, go over it together with your DM. has its roots in wargaming, so it is actually no surprise that "combat" is approved https://felixqiwkw.get-blogging.com/40027810/about-what-are-the-rules-for-exploring-dungeons-and-fighting-enemies-in-dungeon-crawlers