Is there, but it’s behind shortcut keys, gestures, right clicks, or force presses.
There’s also a bunch of tricks that become second nature, especially on smaller laptops. The trackpads really make windowing less of a hassle. I just swipe around and occasionally zoom out on an app (which shows all windows) largely without thinking.
That was my question too, I wonder if there is a reliable way to measure where it all went, or if it’s just diluted in the increased blood volume.
There’s also the possibility that with are more careful with their intake during pregnancy, but that could be controlled for in survey data.