Why would a hospital/medical center be busy on a seasonal basis?

A valet at a hospital/medical center told me they get busier in the Summer than in the Winter.



Isn't a hospital a year-round operation?

Don't people get injured in about the same volume year round?





do they hold summer-time special events or something?Why would a hospital/medical center be busy on a seasonal basis?
Maybe since it's hotter more people pass out or something and more people go out side in the Summer and do stuff so they would get hurt more.



I'm not sure, I don't work in a hospital I just guessing