Cycling is a mode of locomotion that utilizes mechanical assistance to propel a human body, making it an object of study in both biomechanics and physiology. From a biological perspective, the activity provides significant cardiovascular conditioning, improving heart efficiency, circulatory function, and skeletal muscle tone through sustained aerobic effort. Mechanically, the activity involves converting muscular force into linear movement via a complex system of linkages and gears, requiring principles of torque, friction, and energy conservation. The efficiency of cycling depends heavily on the interplay between rider biomechanics, the design of the implement (the bicycle), and the resistance encountered, allowing it to serve as a model system for studying human-machine interaction and metabolic energy expenditure.