When it comes to building muscle, there are numerous theories, methods, and preferences. Whether the goal is improved health, aesthetics, performance, or a combination of all three, there is no shortage of advice to help you get there. So much so that it can sometimes become overly complicated and you forget about the basic facts. But, it's simpler than it seems.

Getting stronger isn’t just about what takes place in the gym, though that’s a key component. How you tackle the rest of your day and night, including sleep, goes a long way to determining how or if you build muscle.

Here are the 15 most facts about muscle building from how to eat, train, live, and more.