According to designer Carlo Ratti's Carloratti

Gym project is a human-powered Gym Boat that cruises along the Seine River by using energy sourced from passengers’ workouts. The Paris Navigating Gym is a 20-meter long fitness vessel

that can host up to 45 people. The fitness area features Technogym’s ARTIS machines – a special typology of sports equipment that harnesses human energy and makes it available to

further uses." target="_blank">website, the Paris Navigating Gym is a boating concept that uses human exercise to flow down the Seine River. The boat is 65 feet long and allows 45 people to exercise

on it at a time. 

The gym will have specialized equipment that takes the energy humans output while exercising and uses it to power the boat. It's essentially

like using a mouse running on a wheel to power a microwave. But, you know, more productive. 

Using it's specialized exercise machines, the boat can travel down a predetermined route. It will have regular stops and anyone who wants to can get on. So, if you're in the neighborhood, feel

free to hop on. 

According to Indy 100, Ratti is interested in exploring what kind of potential there is in exploring human power. He goes on to say on

his website that the boat could change the way mobility is structured in Paris. Basically, everyone could be bike-boating instead of just straight-up biking. 

The Navigating Gym is going to have screen tech that reveals weather conditions and info about the river. It will also tell exercisers how much they've burned and how it's helped

the boat keep moving. 

That part about weather conditions is important—after all, the boat is basically a pop-top. The see-through part will be removed in the summer so riders can enjoy

the fresh air.