Today when I arrived at the gym to workout, the temperature was 5 degrees. As I entered the gym from the parking lot, I saw two men walking into the gym in shorts. It has been my experience that no matter how cold it is, someone will wear shorts outside.
What economic model explains this behavior?
There isn't a model. Some behavior is beyond economics and I believe this is one behavior. Maybe the shorts wearing people are some how weighing the benefits with the costs at the margin. But I can't comprehend it.