I am 5/7 and I weight 130 pounds. I want to weight 150. How can I gain those 20 pounds? I been eating alot and its not helping. I still weight the same. Is it because I am eating the wrong type of food? I work at mc donalds so most of the food I eat is mc donalds. I been eating like 5 or 6 meals a day forcing myself even tho I am full. Could it be because I workout and run??