London-based practice Studio Micat has built an outdoor bakery in a forest in New England, which uses a bicycle to grind up flour for making loaves of sourdough.
Studio Micat designers Michael Garnett and Cathrin Walczyk developed a "human-powered bakery" for the Beam Camp children's camp, located in Stratford, New Hampshire.

Comprising an apparatus for grinding flour and an oven, the Brawn & Bread structure is designed to highlight how distanced people have become from the physical effort required to make food.
Rather than using sources of power like electricity, it only functions on human exertion.

"The bread gym is a small but salutary reminder of the effort required to produce this daily essential, and will hopefully inspire a more respectful attitude towards the humble loaf," said Studio Micat in a project description. "It relinks effort and reward, requiring a whole body workout of its users and in so doing provides the sustenance to refuel afterwards."

Flour is ground in the metallic contraption at one end of the structure, with the process beginning by hauling grain sacks to the top via a cable winch.
From here, the sacks are emptied by hand into two hoppers. The grain is then sent by the funnel-shaped devices into a mill, where it is ground into flour using the power provided when users pedal on a stationary bike below.
The flour is then collected and added into glass jars, to be used as a sourdough starter for bread.

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