After thinking about things for a while, I realized these are five things you can do at the gym.
1 ) If the gym receptionist is hot, you can try to chat with them. Who knows, a friendship may emerge from it. Maybe even romance.
2 ) Use the vending machines. In many cases, they have some cool snacks, sweets, and drinks. You can grab a few before going home.
3 ) Buy souvenirs. Many gyms have some sort of store where you can buy shirts, backpacks, and the like.
4 ) Catch instructors during their breaks. If he or she is hot, and you manage to chat with them, you might end up becoming friends. Maybe even have a romance.
5 ) Use the free wifi, some gyms have them. Helps save the data megabytes on your mobile phone.
Oh yeah, at the gym you can also work out and exercise, if that is your thing, of course! :)