Your Next Gym

Imagine the gym of the future. It has rows of exercise devices, same as now, but the machines have sensors that can detect who is using them (maybe via RFID from your gym card) and how much poundage is being moved at any moment. For the cardio machines, your speed and distance would be measured, just as it is now.

Now imagine that each machine is networked to a server. Everyone in the gym works as a team, with their actions becoming the inputs for a wall-sized video game. Each gym would have a...