This is a really interesting idea. Inmates in Brazil are able to shave time off their sentence by riding a bike! By pedaling on stationary bikes, inmates charge a battery that powers 10 street lamps along a riverside promenade. For every three eight-hour days they spend on the bikes, volunteers get one day taken off their sentences.
“We used to spend all day locked up in our cells, only seeing the sun for two hours a day,” said the 38-year-old Silva, whose missing front teeth speak to a life of hardship. “Now we’re out in the fresh air, generating electricity for the town and at the same time we’re winning our freedom.”