Why cant I gain weight?
I have been trying for years to gain over 100lbs, I eat healthy however I do not work out like I should. I am 23 and 90lbs I stand 5'5" I have been this weight since I was 16. I have seen a doctor but they could not explain to me what the cause of my inability to gain was. I have tried everything I can think of to put on some weight but nothing has worked so far. Please help me better understand why I am unable to gain some kind of fat!