Everyone listed a bunch of different methods and ways on what you should do to gain weight here, however. What you really need are guidelines and a boat load of motivation. People like you and I have REALLY high metabolisms, and generally speaking we have "good genes" a small fraction of population seeks to gain weight which is odd enough, especially if you live in America ha. Anywho, here is what I'd recommend you invest your money into, NOT JUNKFOOD!!!
http://www.gnc.com/product/index.jsp?productId=3480829 Yes this is a workout supplement but GNC is a trusted brand like many and inside this Mass XXX Amplified recipe are low dosages of
creatine monohydratewhich will add water mass to your body. Hence the "low dosages" portion I typed up before. You're not going to want to take an all out creatine supplement such as Cell Mass because you aren't working out consistently and it will do nothing to you except give you nausea and diarrhea because you're not drinking close to a gallon of water daily. What Meowmitch said was closest to what I'm saying, however gaining weight will be extremely difficult for you if you don't keep up with this method I'm about to share. Any mass you're interested in gaining if at all you truly do is muscle mass. You don't necessarily need to be a health nut but you need to be consistent with
measuring your calories in and calories out. Every day, ask yourself: Am I getting my daily amount of protein? (1 Lb = 1 gram of protein) Top athletes sometime consume 1.5 grams per 1 Lb of their weight, you on the other hand will simply excrete that .5 grams so don't go eating two roasted chickens from Wal-Mart. The second thing you need to do is, if you're taking GNC supplement specific to the one I recommended... drink over eight, eight ounce glasses of water throughout the day. Yes that's easy to do but throughout the day is the safest and easiest way to consume all that water. Another thing, if you think those two steps are enough and this last one isn't then you shouldn't of read this far into my reply! Working out is essential for someone with your build, if you can achieve 3 sets of 20 push ups at one sit down one day, and the next complete those same 3 reps throughout the day? E.G. one in the morning before school, one after school, one before you brush your teeth and wash your face for bed. Results will come faster than you eyes can blink (not literally, but they'll show soon enough) Eventually you'll be able to experiment with variations of push ups, which will target different parts of your core and body. I'm only using push ups as an example because there are many good bod building forums you can find that offer better, more sophisticated routines for you to study, learn and complete. Hope this gives you insight on what you're taking yourself into
