Boys, voice gets deeper, grow facial hair, penis grows, testicles grow, produces sperm, gets erections, hands and feet grow, Girls, breasts grow, produces eggs, hips widen, start having periods, waist narrows, abdominal cramps (sometimes), weight gain, Both, mood swings, grow taller, sweat more, grow pubic hair, behaviour changes, more spots, grow underarm hair

Puberty

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