Q: In order to lose fat u should also do weight training in order to build some muscles.But i have heard that in order to build muscles u need to eat more.On the other hand in order to lose fat u need to eat less.I heard that losing fat and building muscles are different goals and cant be achieved together.What do u think of this and what should i do in weight training to build muscles and lose fat at the same time?(my primal goal is to lose fat )

A: Burning fat and building muscles are different goals, but they're very related. As a beginner, if you have a conservative weight-loss diet (in other words, slightly undereat), you'll be able to both burn fat and build muscle for some time. After that initial period you'd be best served by picking one goal or the other and structure your diet accordingly. But your exercise program should always be in muscle-building mode! That way if you're trying to build muscles and eat accordingly, you'll get the result you want. And if you are trying to lose fat and eat accordingly, then exercising in a muscle-building way will become your best natural fat-burner besides the good diet.

So you always weight-train the same way: as if you're building muscle. Then you structure your diet either to lose fat or to build muscle. I tried to outline these guidelines here.