One of the main problems which people who want to gain muscle face is that when they increase their muscle tissue they also gain fat.
Often, this results in you looking bulky rather than toned and fit.
For some people, it's better to look scrawny than bulky.
Bulky just isn't attractive.
However it's entirely possible to gain muscle and burn fat at the same time.
It all depends on you.
The one condition which you must keep if you want to gain lean muscle tissue is to increase your calorie input above your caloric maintenance level.
The calorie maintenance level is the number of calories you need to eat each day in order to avoid going into a deficit.
To increase muscle tissue you need to eat more than your calorie maintenance level since you're adding more tissue to your body.
The problem is that eating more can easily lead to more fat as well as more muscle and it's difficult to control and know exactly how much to eat.
A good rule of thumb would be to increase your calorie consumption by a small margin, 10-15%.
What this will do is help you gain muscle tissue without increasing your body fat.
The added muscles will help to burn more fat since muscles simply require more energy to sustain themselves.
Of course, the trick is to play a little with your calorie consumption to locate that "sweet spot" where you add the most lean muscles and burn the most fat.
However, the 10-15% guideline is a good range for you to play in.
Of course, this 1 nutrition trick to gain muscles and burn fat will not work if your workouts aren't focused on muscle growth.
To achieve the best results, focus on muscle building workouts and eat according to what I specified.