By now, you've probably seen people walking the streets, parks and even their offices to hunt down Pokemon. The augmented reality game is getting people off their feet and out into the real world to collect the creatures that were once confined to an entirely digitized video game. This Pokemon Go t-shirt lets others know that Pokemon Go is your cardio. The shirt will also help to explain why your head is in your phone so much. Basically, the game uses your cell phone's camera, GPS and clock to detect where you are in the game so it can make Pokemon seemingly appear in the real world as you look through the screen.