How do I block or report someone?

Block from any conversation or post, report from the same menu, and manage your blocked list from Profile.

Both controls exist everywhere people can reach you: posts, comments, direct messages and group chats.

Open the menu on the thing or the person
On a post, a comment, a direct message or a group message, the menu carries both block and report.
Blocking is confirmed first, and it goes both ways
You are asked before it happens, because blocking reaches further than the screen you are on: it applies across the community feed, chat and video calls, in both directions.
Reporting sends it for review
Reports go to the people who moderate that space. Enough reports on one thing hide it automatically while it is looked at.
Manage or undo it from Profile
Blocked accounts are listed in Profile, and you can unblock from there. A block you cannot see or reverse would not be a control you have.

Worth knowing

The published community standards are at colossus.fit/community-guidelines, and they say what is not allowed and how it is enforced.
Blocking your coach is possible and it does what it says. If you want to end the coaching relationship rather than silence it, talk to them or your coach can end it from their side.