Hey, I've never mentioned this before but I've been body building for about 10 months I've noticed rapid newbie gains because I'm a newbie obviously, I'm around 5'8 and weigh 70kg an I've noticed that there's a slight "chip" if you whish, in my left pectoral, the other one is curved perfectly...
I am 13 years old. And i approximately weigh 135. I have a little muscle on my arm but not a lot. And my pectoral muscle became fat. All i want to do is gain more muscle in my pectorals, but i also want to get muscles in my arms at the same time. What can i do other than push-ups (which are...