My muscles are abnormally narrow & not same as other persons. They are comparatively narrower than others. They looks like immature. My age is 28 years & i m 173 cm in length. It makes me to feel shame when my girlfriend sat besides me & ask me about my health, i can t answer her question & always try to avoid the topics. Pls. give me some useful suggestions to get over it & make a good health. [N.B.: i m a smoker]