“No Doctor can ever lose sight of the fact that the mind of woman is always threatened with danger from the reverberations of her physiological emergencies,” Wright wrote, referring to periods.

The lady is Mary Putnam Jacobi, one of the very few women practicing medicine in the 1870s. She argued that wammen brains wouldn’t explode if exercised during menstruation. This was a thing doctors believed.

I point you to this article about it in the Atlantic.

It isn’t so much that the topic is interesting, I just found it hilarious reading Aunt Flo described in the windy, pompous language of late 19th Century doctor science.