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A twelve-year study following approximately 40,000 adults across several municipal recreation programmes examined whether the type of leisure activity people chose, rather than merely the total hours of exercise logged, influenced long-term wellbeing outcomes. Participants were grouped into those who favoured solitary fitness pursuits such as running or swimming, those who joined organised team sports such as football or netball leagues, and those who engaged primarily in low-intensity social leisure such as gardening clubs or amateur choirs. All three groups showed comparable improvements in cardiovascular markers when matched for weekly exertion, confirming that physical benefit scales mainly with effort regardless of activity type. However, the team-sport and choir participants reported significantly higher scores on standardised measures of life satisfaction and reported feeling lonely less often than solitary exercisers, even after controlling for age, income, and baseline health. Researchers suggest that the recurring social contact embedded in scheduled group activities, rather than the physical activity itself, may be the operative mechanism, since members were obligated to show up for teammates or fellow singers on a fixed weekly schedule, creating a form of accountability absent from solitary training. The study also found that people who switched from solitary to group-based leisure mid-study reported improved mood within roughly four months, though the effect was smaller among participants who described themselves as naturally introverted before the switch. Critics of the study note that self-selection may explain part of the difference, since individuals already inclined toward sociability may simply choose team activities in the first place, and the researchers acknowledge they could not fully separate cause from preference using observational data alone. Even so, several municipal leisure departments cited the findings when redesigning subsidised recreation programmes to favour group formats over individual gym memberships.