Originally Posted by WannaBeBig-15
Im 15 and I'm really wanting to get big but it's kinda hard......
I'm 5' 10'' and weigh like 145. I have a ok build but I want to fill up my upper body, more accurately around my upper chest/ collarbone and shoulders. I also want bigger arms and legs...
Other then that I have a good core and ok definition and just need some good advice/workouts
Do a clean bulk. Like has already been said Bodybuilding.com has a ton of info.
If you are serious about gaining muscle mass then you need to eat and train like a beast. Go 500 calories above maintenance and give it hell.