Sloth
Becoming a sloth requires being born as one, which presents significant barriers to entry for the human population. Whilst approximately 84% of survey respondents in a study by the Newcastle Institute of Aspirational Identity expressed desire to live 'more like a sloth,' the biological transition remains impossible with current technology.
Sloth sanctuaries offer limited interaction opportunities, but these typically involve observing rather than becoming. The sloth lifestyle, whilst theoretically appealing, maintains strict membership requirements.
Marathon
Marathon running remains accessible to anyone capable of sustained bipedal locomotion. Training programmes such as 'Couch to Marathon' have enabled millions of previously sedentary individuals to complete the distance. The oldest marathon finisher was 100 years old, whilst the youngest official finisher was 3, suggesting the age range for participation spans nearly the entire human lifespan.
Entry fees typically range from 40 to 200 pounds, with charity places available for those willing to fundraise. The equipment requirements are minimal: shoes, clothing, and a willingness to suffer constitute the complete kit list.
VERDICT
The marathon's democratic accessibility represents its primary advantage. Anyone with sufficient determination and functional legs can participate, whilst the sloth experience remains permanently exclusive to those born into it. The marathon wins this category by default of biological feasibility.