I am 14 yrs old and my pecs are okay in size for how young I am. But I have noticed that one seems to be broader and the other one seems to be narrower. THe one that is broader also is bigger. This is my chest workout: Bench Press;Incline bench Press: Dumbell Flyes; Incline Dumbell flyes. I also do my shoudlers and tri's the same day.I mainly lift with my chest twic a week. I am very careful to take a lot of days of recoverey. I eat right....please help. It is winter but I want even pecs for the summer. THank you!