Let's talk more about the "men filling in period tracking apps" and why both I don't like it as a suggestion and what you can do instead.
Putting on my data professional hat for a moment.
As a general rule: Anything that can be solved by adding one static term to a database query is at best value neutral
Therefore if your "chaos" data is distinguishable from "real" data with a single static query you aren't really accomplishing anything that will impact an attacker