Harry Engels/Getty Images

A fitness promotion ahead of the 2014 Winter Olympics in Sochi, Russia gives Moscow commuters a free subway ticket in exchange for 30 squats.

A typical ride costs less than a dollar, but riders seemed happy to take on the challenge.

WE WANT TO KNOW: Would you engage in a little physical activity for a free ticket?

Emily DeRuy is a Washington, D.C.-based associate editor, covering education, reproductive rights, and inequality. A San Francisco native, she enjoys Giants baseball and misses Philz terribly.