The strength of an average 13-year-old can vary widely based on factors such as genetics, physical activity, and overall health. Generally, at this age, many children are developing muscle mass and coordination, but they may not yet have the strength of fully developed adolescents or adults. Boys and girls may also show different levels of strength due to physiological differences. Engaging in regular physical activity can significantly enhance a 13-year-old's strength and fitness levels.
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