Sanitation
Covered t-shirts or vests are actually part of the dress code in the gym due to sanitary reasons, but the dress code is seen in front of the gym reads “Athletic wear must be worn.” Despite this, the employees discussed Sarah’s coverage and have not mentioned anything about sanitization.
Additional Responses
The commenters in Sarah’s post said the same thing – that even their own gyms require their students to wear clothing that does not cut-off or crop, to help minimize skin contact with the various exercise machines and equipment.