India, Nov. 13 -- Nearly one in four adolescents aged 11-17 worldwide, or about 240 million teenagers, reported no days with at least an hour of physical activity in the previous week, according to recent estimates released by the World Health Organization (WHO) on November 4, 2026.

An active day is defined as one involving at least 60 minutes of moderate-to-vigorous physical activity.

Only 14 per cent of adolescents reported being active for at least an hour on all seven days, while the global average was 2.7 active days a week.

The findings, published in the journal The Lancet Global Health, draw on 389 population-based surveys covering more than 3.2 million adolescents across 140 countries and territories.

They reveal little progre...