Unstructured play can provide just as many benefits. Organized athletics also have their merits. Children can polish their motor skills, meet new friends and benefit from coaching. But they aren't for every child, especially if the focus is more on winning than enjoyment. And it is generally recommended that parents wait until their child is 6 or older before starting them in team sports because many children do not understand the concept of teamwork until this age.
Unstructured play is recommended before then.
For kids, not all physical activities are considered equal. Power weightlifting is not recommended for young children. Cross-country jogging might not be appropriate, either. Parents can try a number of strategies to ensure their children are active and enjoying being fit. Television and computer time should be limited.