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Study: A quarter of adolescents worldwide never reach an hour of daily activity
Around 240 million adolescents worldwide reported in 2025 that they had no day with at least an hour of moderate-to-vigorous physical activity during the week, according to a study published in The Lancet Global Health. Drawing on 389 surveys covering 3.2 million adolescents in 140 countries, the study found that the average number of active days remained at 2.7 per week between 2010 and 2025. Girls reported less activity than boys, alongside geographic and income-related disparities.