Aggressive Boys Stronger Than Other Teens, Study Says

March 9, 2015 8:00 PM

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MONDAY, March 9, 2015 (HealthDay News) -- Aggressive boys tend to develop more physical strength when they're teens than nonaggressive boys do, a new study finds.

Researchers examined data from twins in Minnesota whose levels of aggression and hand-grip strength were assessed at ages 11, 14 and 17. Hand-grip strength is closely associated with other types of muscle strength, the researchers explained.

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