Stronger benefits are seen in young children who exercise. Intense, tiresome activity delivers the greatest results, but a gym membership is not be necessary.

Marie Lof, a senior researcher in biosciences and nutrition, said, "I was a little surprised that we found this correlation between physical activity, muscle strength and stamina."
Lof said, "The results showed stronger benefits than expected for young children who exercise more than their peers. Intense, tiresome activity delivers the greatest results, but a gym membership is not be necessary. One can play with soft balls or balloons, anything to spur the activity in a natural way."
Source-IANS