I have a 11 years old son who is a swimmer in a swimming team, he is taking fitness class for the swimming, lately his fitness coach start to let him work on the machines in the Gem twice a week lefting from 5 to ten kilos, I heard that it is not right for this age to left weight, the coah said it's OK, I wonder its right to let him do that or he should stop, just have dryland excercise only ?
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