I just realized that i have been working out regularly for four years. I train with free weights and perform all of the basic bodybuilding excercises. Initially i got good gains but now they come hard and slow. I know i dont intake nearly enough calories. I am a picky eater. Also, for the most part i do not do any supplimentation, protein or otherwise. Now i find myself getting serious about getting bigger. I am currently 5'10" 160lbs. I would like to be 185-190lbs with a bodyfat of around 15%. If i were to significantly up my calorie intake and ensure that i take in adequate amounts of protein (1-1.5g per lean lbs of bodyweight), is it possible to gain the size and enhance my physique? By the way I am a 32 yr old male.