good ways to burn fat and gain muscle?

"Though some people will be able to gain muscle and lose fat at the same time, most WILL NOT. The fact is, there are no magic pills, powders, foods or exercises that will allow you to gain muscle and lose fat at the same time. It all is determined by your genetics and metabolism. If you are naturally thin and have a difficult time gaining weight of any kind, it would be sili of you to think that you will be able to gain muscle while trying to keep your body fat low."

while exercising + eating well ; increase the fiber in your diet + H20