The Science of Physical Activity
          Submitted by            Edie
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      What is the science behind it?
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	Physical activity has many health benefits: it strengthens the heart and can help improve bone health and fitness, lowers blood pressure, improves sleep quality and reduces the risk of diabetes. 
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	Physical activity stimulates brain growth, motor skills and cognitive development. It improves learning and memory and helps children achieve better in school. 
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	Physical activity releases endorphins and dopamine, nature pain relievers that also create a feeling of well-being and happiness and lower the risk of depression. 
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	Children aged 3 to 5 should engage in active play for at least 3 hours each day. 
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	Children age 6 to 17 should engage in at least one hour of moderate to vigorous activity a day.