Active kids: 60 minutes a day in the U.S. and Japan, and why play matters
Kids who move a lot can do more when it counts: walk to a shelter, scramble over debris, carry their own water. The good news is that the guidelines on both sides of the Pacific are built around play.
U.S. guidelines
| Age | Guideline |
|---|---|
| 3 to 5 | Be physically active throughout the day. Caregivers should encourage active play with a variety of activity types. The guidelines say a reasonable target may be 3 hours a day of activity of any intensity |
| 6 to 17 | 60 minutes or more of moderate-to-vigorous activity daily. Most of it aerobic, with vigorous activity on at least 3 days a week |
| 6 to 17, also | Muscle-strengthening on at least 3 days a week, and bone-strengthening on at least 3 days a week, as part of the 60 minutes |
None of this needs a gym. The guidelines note that muscle-strengthening can be unstructured play, such as playground equipment, climbing trees and tug-of-war, and that running, jumping rope, basketball, tennis and hopscotch all strengthen bones. CDC lists benefits including improved academic performance, brain health, muscular fitness, heart and lung health, and bone strength, and reassures parents that their children may already be meeting the targets.
Japan's guidelines
Japan goes further for young children. Its education ministry's Early Childhood Physical Activity Guidelines (2012), for ages 3 to 6, recommend that children engage in fun physical activities for at least 60 minutes daily, primarily through various forms of play (as summarized in the health ministry's English guide). The ministry explains why: in its survey, preschoolers who played outside more tended to be fitter, yet more than 40% played outside for less than an hour a day. It stresses that the 60 minutes is a daily total including walks and helping at home, not a structured exercise program, and that varied play helps children learn the quick movements that protect them in a sudden emergency.
For school-age children, the health ministry's 2023 guide cites the WHO recommendation of at least 60 minutes of moderate-to-vigorous activity per day. Its children's edition notes that in a 2022 survey, 62% of fifth-grade boys and 54% of girls, and 73% of eighth-grade boys and 70% of girls, spent two hours or more a day on screens outside study.
Outdoor play that builds readiness (our suggestions)
- Give kids real jobs at camp: carrying water, gathering sticks, helping pitch the tent.
- Let them carry a small daypack with their own water and snack on hikes.
- Walk to your evacuation point together and time it at their pace.
- Teach water skills early; see Water competency.
Everyday
Make outdoor play a daily habit: climbing, running, jumping and carrying their own small pack on hikes.
When it counts
In an evacuation, active kids can walk farther, climb over obstacles and carry some of their own gear.
Sources and when we checked them
- HHS, Physical Activity Guidelines for Americans, 2nd edition (2018, PDF) (checked 2026-10-31)
- CDC, Child Activity: An Overview (Dec. 4, 2025) (checked 2026-10-31)
- CDC, Health Benefits of Physical Activity for Children (Mar. 10, 2026) (checked 2026-10-31)
- MHLW (Japan), Physical Activity Guide for Health Promotion 2023 (English, January 2024, PDF) (checked 2026-10-31)
- MEXT (Japan), Early Childhood Physical Activity Guidelines (March 2012, in Japanese) (checked 2026-10-31)
- MHLW (Japan), Physical Activity Guide 2023, children's edition (PDF, in Japanese) (checked 2026-10-31)
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