Calling it a "bio break" makes it sound like you are trying to excuse some unfortunate deficiency.
I actually find this one minimally objectionable. I am a meat robot and I must attend to biological necessities. This is a convenient abstraction for my working relationships.
Taking a shit is a pleasure, the meeting is the inconvenience.
https://www.merriam-webster.com/wordplay/bio-break-meaning-a...