Did the British Penal System Really Invent the Treadmill?
Today, one out of six Americans uses a treadmill regularly. But before we knew the benefits of an aerobic workout, treadmills were used to punish prisoners.
History of treadmills
Today, one out of six Americans uses a treadmill regularly. But before we knew the benefits of an aerobic workout, treadmills were used to punish prisoners.