Treadmills seem downright ho-hum these days, but before the era of "random hills" and heart rate training zones, indoor runners had to make their own fun. Luckily, they had people like Rosemary Andree -- a classical dancer and "body culture expert" -- to help teach 'em how to mix it up. Not sure any type of expert would approve of those shoes, though.
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22nd August 1934: Rosemary Andree, a classical dancer and body culture expert, demonstrating exercises using a treadmill. (Photo by Fred Morley/Fox Photos/Getty Images)
22nd August 1934: Rosemary Andree, a classical dancer and body culture expert, demonstrating exercises using a treadmill. (Photo by Fred Morley/Fox Photos/Getty Images)