8 Science-Backed Reasons for Letting Your Kids Play Outdoors

by ParentCo. April 11, 2023

father teaching his son cycling at park

The average American boy or girl spends as few as 30 minutes in unstructured outdoor play each day. Only 6% of children nine to 13 play outside on their own in a typical week.

But if you're reading this, you probably already know that outdoor play is essential for children's health and well-being. Here are eight science-backed reasons that prove you're right.

1. Better vision - Multiple studies show that sunshine and the natural light of outdoors lowers the chance of nearsightedness and improves distance vision in children. Kids who spent more time outside had better distance vision than those who prefer indoor activities. A recent study from Ohio State University mentions that 14 hours a week of outdoor light is effective for better vision.

2. Better resistance to disease - Multiple studies show that playing in the dirt (soil) outdoors helps kids stay healthy. Bacteria, viruses and other gross things in the soil actually help the immune system, and brain develop. Playing the dirt can also improve a child's mood and reduce anxiety and stress.

3. Increased Vitamin D - It's difficult to get enough of this nutrient strictly from food. 80-90% of our vitamin D actually comes from sunshine. Sensible unprotected sun exposure of 10 to 15 minutes will do it. After the first 10 - 15 minute exposure, it's best to cover up with sunscreen.

4. Less Stress -  It's safe to sat that outdoor recreation reduces stress. This comes from a combination of factors producing positive physiological and psychological responses. 90% of kids who spent time outside said being in nature and taking part in outdoor activities helped relieve stress.

5. Better attention spans, even for kids with ADHD symptoms - Over time, we have learned that natural settings and green outdoor activities reduced ADHD symptoms in children. Activities outdoors specifically had greater positive impact than other settings. These positive effects are measured in children as young as age five. A 2008 study at the University of Michigan found that memory performance and attention spans improved by 20% after subjects spent an hour out in the nature.  

6. Better physical fitness - Outdoor play increases fitness levels and builds active, healthy bodies. One in three American kids who are obese. Running around, climbing, walking, exploring, and getting dirty burn calories and strengthen growing bodies. Bonus: there's ample evidence linking physical fitness and academic achievement. Likewise, simply taking a stroll outside increases creativity.

7. Better classroom performance - Multiple studies show that kids who spend time outside (including during the school day) do better in all academic subjects. Factoring out other variables, studies of students in California and nationwide show that schools that use outdoor classrooms and other forms of nature-based experiential education produce significant student gains in social studies, science, language arts, and math.

8. Spark curiosity & imagination - As kids grow, indoor environments become known, understood, and familiar. However, outside environments are dynamic and ever-changing. They are outside our control. As such, they invite the mind to wander, looking, observing.



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