It is 6:10 p.m. The bungee fitness class I’m supposed to observe at Pop Fit Studio started at 6. But, instead of watching exercisers fly around the room attached to bungee cords, I’m wandering around ...

You might have already done some kind of bungee training, but probably not like this. Instead of strapping up bungees to add resistance to running or side-shuffling, these bungees are designed to make ...