The Hashira training is conducted by the Demon Slayer Corps and the lower-ranking Demon Slayers are expected to take part in ...

This kind of emotional baggage doesn’t exactly put you in the mood for team-building exercises. He's more about introspection and personal atonement than high-fiving fellow Hashiras. 3.

and this very ability is what has put him on par with the Hashiras finally. He also motivated his comrades who were going through the same grueling fitness training to keep pushing, so that they ...

but here is the list of training exercises that Tanjiro must go through to become a Hashira, and which Hashiras administrate those. I suppose this could be considered a spoiler, but here you go.