Even when young children get plenty of sleep and run around all day, excessive screen time keeps nine out of ten preschoolers from meeting global health targets.
Only 10 percent of preschoolers meet the full trio of World Health Organization recommendations for physical activity, sleep, and screen time, with daily screen limits posing the single biggest hurdle for families.
Preschoolers often appear to be thriving because they are physically energetic and sleep well, but screen time quietly undercuts those physical and cognitive wins. High levels of physical play do not neutralize the developmental risks of exceeding screen limits.
Environment plays a massive, often overlooked role in early movement skills. Children living in urban areas lag behind rural peers in foundational motor skills like balance, jumping, and grip strength, making deliberate physical play a necessity for city parents.
Researchers with the global SUNRISE project monitored preschool children in Nepal to measure how 24-hour movement habits—physical activity, sedentary screen time, and sleep—interact to shape motor skills and self-regulation during early childhood.
Screen time is the primary factor preventing young children from meeting international health benchmarks.
- Screen time is the main obstacle: While about 80 percent of children met target guidelines for sleep and physical activity, only 56 percent stayed under the recommended one-hour daily screen limit.
- Rural kids demonstrate better motor skills: Children in rural settings outperformed urban peers in balance, jumping distance, and handgrip strength, likely due to unstructured outdoor terrain.
- Boys are more active, but watch more screens: Boys logged significantly more daily moderate-to-vigorous physical activity than girls (93 minutes vs. 78 minutes), but were far less likely to stay under screen time limits (42 percent vs. 66 percent).
- Girls lead in self-regulation: Girls scored higher in inhibitory control, showing a greater ability to pause, resist impulse, and think before acting.
Physical activity and screen exposure operate on entirely separate developmental tracks. Racking up hours of active play does not shield a child’s brain from the cognitive trade-offs of prolonged screen exposure, making screen management a distinct task rather than something that can be exercised away.
This was a small pilot study of 99 children aged three and four in a single district of Nepal. Sleep and screen time were reported by parents rather than measured objectively, which typically leads to an underestimate of actual screen use. Because the design was observational, it shows strong links between environment, screen habits, and child skills, but cannot prove direct cause and effect.
- If you live in a city or apartment... prioritize taking your preschooler to terrain with rocks, hills, and uneven ground to build the balance and grip strength that rural environments naturally provide.
- If your child is a highly active boy... set clear screen boundaries before habits solidify, as active boys in this age group are at the highest risk of blowing past daily screen limits.
- If your preschooler gets plenty of exercise... keep daily screen time under one hour anyway, because high physical activity does not offset the impacts of excessive digital media.
Do not rely on outdoor play alone to offset the effects of prolonged screen use in early childhood. Enforcing a strict one-hour daily screen cap while offering varied physical terrain gives preschoolers the best foundation for motor and cognitive development.
Subedi N, Okely AD, Bhandari B et al. (2026). International study of 24-hour movement behaviours among preschool children (SUNRISE): A pilot study from Nepal. Archives of public health = Archives belges de sante publique. doi:10.1186/s13690-026-01984-2 — pubmed.ncbi.nlm.nih.gov