Tolle Idee :-)))
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"To promote exercise and the 2014 Olympics, Olympic Changes installed a very special ticket machine at the Moscow subway station.

Instead of accepting money as payment, the high-tech ticket machine only accepted exercise.

Riders could receive a free ticket by standing in front of the machine’s camera, and performing 30 squats or lunges.

Hey! No cheating!"
thx mario for sharing it on fb.