From Wikipedia:
As a relatively light and slow vehicle, with low-friction tires, and an efficient chain-driven drivetrain, the bicycle can be an efficient form of transport. A 140 lb (64 kg) cyclist riding at 16 km/h requires about half the energy per unit distance of walking: 43kcal/mi.[3] This figure depends on the speed and mass of the rider: greater speeds give higher air drag and heavier riders also consume more energy per unit distance. This converts to about 670 MPG.
Cody Ray is an engineer by day and a budding entrepreneur by night. If you're looking for a tech savvy businessman, or a business-minded geek, he's your man.
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