If you want to know how to build muscle, skinny or not you need to follow a few simple rules.
However if you are a hardgainer which is a skinny guy who finds it very difficult to gain weight and muscle mass then you need to adhere to these concepts much more diligently than other body types.
The three things you must understand are: Workouts Need To Stress Your Muscles By stressing your muscles we mean lifting heavy weights.
Lifting to your limit and trying to push beyond just a few times does a lot more for building muscle than lifting light weights a hundred times.
When a muscle is stressed from heavy weights it is actually slightly damaged.
This is a natural process as when this happens the body repairs that muscle and actually adds more muscle mass on top of it to compensate and adjust.
Eat Massive for Massive Gains Perhaps it is because skinny guys have some aversion to possibly becoming fat that many do not eat anywhere near enough to gain muscle.
Without energy and nutrients the workouts you do that stress your muscles will be wasted as the muscle will not repair fast or with any increased mass as the body simply does not have the resources to do it.
So make sure if you are working out with the right intensity you increase your food consumption by a huge margin, do not worry about gaining a bit of fat if it happens the muscle gain will come to and then your natural metabolism will cut that fat pretty fast when you have finished a bulking stage.
Do not Forget to Rest I know you are busy and many take this as an excuse to do bad things to their body such as get poor rest and sleep.
If you have fed your body well AND you have worked out lifting heavy weights it is when you REST and sleep that you actually heal those muscles and grow them; not during the workout.
How to build muscle skinny guy is largely about NOT working out which is quite a shift in thinking!