I have been lifting for 4 years and i have always wondered this. Me and my brother (who is 13 months younger than me) always looked the same and were pretty close. I lifted in high school (but not real seriously) and hes never really lifted till this day. But i've suffered severe bouts with acne since i was about 15. Im 21 and would still have major amounts of acne if i didnt take my medication. Hes never had acne problems. He's 6'2'' and im only 5'10/5'11. My dad is 6'1''. Im like the smallest guy in my entire family. Also, since i was 19, i started to get a receding hairline. Now, its pretty receded now (it looks like a McDonalds arch). So i shave my head pretty close. Hes 20 now, and shows signs of the receding but no where near where i am or was. My question is, if i didnt lift, would all these not happen to me. I am lifetime natural, no roids, no prohormones. Only protein and creatine. Would i be taller, not experience acne, and have more hair, or is this just a byproduct of genetics.