I like working out at the gym,but after a few weeks i always stop because it seems as if i start losing weight. I DON"T WANT TO LOSE WEIGHT!!!!!!!!!! All i want to do is build the muscles in my legs(calves) so my legs can look bigger.Tone up my stomach and my thighs.But when i start working out seems like i start losing weight.How can i tone my stomach and waist,and build my legs so my calves can look bigger and my hamstrings looks tone and NOT LOSE ANY WEIGHT. Thanks