Final answer:
The WHO recommends about 3 hours of daily physical activity for young children, which promotes better health and helps prevent obesity.
Step-by-step explanation:
The World Health Organization (WHO) recommends that young children engage in about 3 hours of physical activity per day in total. This recommendation supports the idea that increased physical activity contributes significantly to the overall health and development of children. By engaging in activities such as outdoor play, children are more likely to develop a healthy heart and brain, and to enjoy physical activity more, which in turn can help prevent obesity and promote lifelong health benefits.