Q: Lets say i have obtained some muscles and now i wanna lose some of the last fat.What approach is the best so i will lose only fat and no mucles at all very slowly?I think that it is good to increase the protein and decrease the carbs at the same time.This way with protein i should be able to keep my muscles impact and lose slowly only fat.What is your suggestion?

A: You have the right general idea -- you'll need to cut calories, mainly at expense of carbs while continuing to keep protein intake high. However do NOT assume that just because you are eating a lot of protein that all of your muscles will be spared no matter how low your carbs and/or calories drop! You will want to create only a small caloric deficit of a few hundred calories per day by cutting down on carbs and so lose weight very slowly. Fill out Mike's Fitness Guide specifying 'Lose Fat' as the goal to get a sample daily diet with protein/carbs/fats/calories breakdowns.