How To Put On Muscle Mass

When people talk about weight, they almost always want to lose weight (fat) or gain weight (muscle). In order to lose weight, you need to burn up more calories than you intake on a regular basis. This is why fat people are stereotypically depicted as lazy, junk-food eating slobs. To be fat, you must be eating a large quantity of food in relation to the amount of work that you do - in most cases, almost none. To lose weight, you must be active, burning many more calories than you regularly consume.

Therefore, it makes sense to consider that the difference between muscular weight and fat weight is an intense work ethic.

Those that work their muscles out need fuel to support them. This is why it’s important to eat a large amount of food.
--Rob: Don’t worry about getting fat - all of the calories will be burned into the muscle tissue as they recover from work outs. As they recover, they’ll also get bigger and stronger, so they can more efficiently handle the weight that you are forcing them to work with. It’s important to do heavy lifting for this reason, as opposed to just being active.

When your muscles get bigger, you’ll be gaining more mass and therefore more weight, so you’ll be a healthy looking, heavier version of you!

For a more in-depth, and comprehensive guide to gain weight, check out some of these links below:
Good Ways To Put On Muscle Mass
How To Start Bodybuilding