
Originally Posted by
Marat
One needs to be in a caloric surplus to gain muscle. A variety of factors dictate necessary maintenance (and surplus) calories but the bottom line is that one needs to be in a surplus of calories, not just protein, to gain muscle.
I suppose an apt, simple analogy building a house. The bricks are the protein. You have a bunch of bricks lying around but you need workers to put the bricks together. Those are the calories.
Providing sufficient (i.e. above surplus) calories gives your body the energy it needs to build muscle. Because you are putting it an a 'happy' environment with all the food coming in, the body will take the route of building muscle since it has the means to do so.
Without sufficient overall calories, the body will not be in an environment to build muscle.
Eat more food. A large part of the industry is pretty hinged on building muscle without losing fat. If you can figure out the way to do this perfectly, you'll be rich.
.