Years ago while playing basketball pickup games, I met a guy named Pete. He was about 5' 10" and had a chiseled physique and could jump out of the gym, but he claimed he never lifted weights and seldom worked out. Despite a lazy attitude, he was still an amazing athlete. We were all so happy for him. NOT. When we are jealous of others it's easy to develop a "sour grapes"attitude about genetics.
There are a host of things affected by genetics including eye and hair color, strength, skin complexion, weight, bust size, vision, baldness, etc. (not to mention a variety of diseases and illnesses that one may be predisposed to.) Some occupations like an NBA Center or an NFL lineman obviously require certain genetics regardless of how much hard work or discipline one has. Even so, there is a lot to be said about one's will and effort to get results and accomplish what they want despite genetic predispositions.
Even if you feel that you lost out on the lottery at birth, you can still improve your health and get in better shape. When you blame your health on your genetics, you surrender your ability to change. The same thing happens if you blame your circumstances on any external force. Once you attribute your situation or problems to external circumstances you are powerless and become a victim. Don't let that happen to you. Just make the most of what you have to work with and you will be amazed at what you are able to accomplish!