Dog
The domestic dog has evolved into what behavioural scientists describe as an inescapable exercise obligation. Regardless of weather conditions, personal energy levels, or the compelling nature of current television programming, a dog requiring outdoor relief will employ escalating tactics until its human complies. Studies published in the Journal of Physical Activity and Health demonstrate that dog owners achieve 22 additional minutes of walking daily compared to non-owners.
This exercise occurs not through willpower but through biological necessity avoidance. The consequences of ignoring a dog's needs manifest on carpets and in behavioural deterioration. Exercise becomes less a choice than a damage limitation strategy.
Bicycle
The bicycle represents what psychologists term a pure voluntary commitment. It cannot compel its owner to engage. It possesses no mechanism for expressing disappointment when neglected. Research indicates that 46 percent of bicycles purchased for fitness purposes see fewer than ten uses in their first year of ownership. The bicycle's silence becomes, paradoxically, its weakness.
When utilised, however, the bicycle delivers exercise of remarkable efficiency. Cycling burns approximately 400-600 calories per hour whilst minimising joint impact. The machine amplifies human effort into speed and distance that walking cannot match. Yet this potential remains theoretical until human motivation independently manifests.
VERDICT
The bicycle offers superior exercise potential. The dog offers superior exercise probability. Potential unrealised holds no value.