andres

In my experience, this is because they conduct yearly x-ray examinations to detect tuberculosis and other lung diseases. Shirts and bras interfere with the image, so they ask students to bring a plain shirt to wear during the examination. However, if there’s no other option, they may ask them to do the examination bare-chested. In my case, there was gender separation (not only in location but also in the time frame), but I can’t say the same for all schools or age groups. Japanese schools are known for having students change into sports clothing in the classroom without gender separation up to 3rd or 4th grade, so I wouldn’t be surprised if there are schools that don’t separate genders for medical examinations.

But there are times where many people really want or don’t want to travel to an specific location because of the weather, events, etc. There is a natural higher demand for some dates, i.e. Christmas, etc., while others have lower demand, i.e., summer in some places. I suspect people that travel without time constrains will be most benefited, ofc, but don’t underestimate the number of people who travel with time constraints.