Avery Edison is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
Avery Edison @aedison

This DMCA notice insists you stop breathing in the particular way they taught you—the rapid gasping as your face flushes and every nerve in your body gets ready for the big moment. This method is copyrighted and currently licensed to another user (you've seen them, they look happy). Find someone new, someone who can teach you a different way to inhale. Failure to comply may result in legal proceedings which will leave you struggling for air.

@aedison Oh, BUT OF COURSE you have all appropriate legal recourse. If you believe you actually do have right to this particular way of breathing, simply file an appeal, which will be adjudicated fairly. In the event that your appeal is denied, then OF COURSE you may file a civil suit in the suitable jurisdiction; in the event you are successful (which may take some months or years), you will OF COURSE be allowed to inhale as you were.