It’s difficult for the body to build muscle and lose fat at the same time. Building lean muscle tissue requires calories! If you are restricting calories to lose body fat, your body may not have the fuel it needs to create new muscle. Instead, the body will break down muscle to use for fuel.
An active person who exercises regularly can minimize muscle loss with the following strategies:
#1 a small calorie deficit that contributes to a slower fat loss
#2 an adequate protein intake (ie protein at each meal and snack)
#3 frequently eaten meals that offer a constant supply of fiber, lean protein and nutrient rich, complex carbohydrates
#4 strength training to protect against the loss of muscle mass
Remember that your muscles are the fat burning furnaces of the body!!
by Kim Agostino