I am 16, 69 inches in height ;about tall as my dad but my body is disproportionate;my head's wider but shorter but i look almost like him;and i have a 74 inch wingspan , which is longer than my dad but i have much smaller hands then him. My frame in thinner and small than him but there similar . I wear size 12 shoe and he wears 10. And i just start to grow peach fuzzy on my lip and chin very faint compared to most guys my age already shaving and growing thick men breads. Can you give me a reason why?