I am about to turn 27 in a week and I'm 5'4 125 lbs. I can't gain wreight and I'm starting to get scared, I check my wreight every day sometimes 3 to 4 times a day. I try to eat as much as I can, mainly restaurant food, pizza, cheese burgers etc. What can I do? Shouldn't I be around 140 lbs?

So in order to gain weight you are clogging your arteries? You won't have to worry about your weight after your first heart attack.

How about eating healthy and working out. Muscle weighs more than fat.

Your weight and metabolism are a matter of genetics.