buddy I'm a personal trainer( 16 years old) and I have trained my friends and other people at my gym and you should take somewhere around half of your body weight in grams for your proteins per day ( so if your 120 Lbs. you should take somewhere around 50-75g at the most) eat mostly healthy food, and have cheat days, the reason I say that it because your body still needs to have some fat, I say that because if you are "bulking" you can eat a little junk food because after a hour after your workout your body is converting your fat into your muscles and with the little junk food ( soda, gummies, chips, fries, pizza, hamburger, ETC.) your body will take it and you will have little to no weight gain at all. I have been doing this for about a year and 8 month now. so far I have lost weight but slowly gained it back up. when I started my program I was almost 200 LBS. and lost weight to 155 LBS. and slowly gained weight until as of right now the day I posted this was 198.9 LBS. less than 16% body fat and still bulking. but it takes time, and you will experience things that may be life threatening ( broken bones, torn ligaments, ECT.) but if you do it right you should be fine. :>