How much muscle can a natural female trainer expect to gain in terms of muscle mass?
A. In the first year of training, a natural female trainer with average genetics but an ideal diet and training regimen can theoretically gain 10-12 lbs of muscle. More likely, her gains will be in the neighborhood of 5-7 lbs. After that, she can look forward to putting on approximately 1-3 lbs. of muscle per year of training.