1. TRAINING -(Progressive) overload Muscle growth occurs when muscle fibers are broken down and then rebuild themselves a little bit bigger and stronger in case a similar type of damaging stress re-occurs.Practically speaking, this means you need to continually overload your muscles, and overload them in different ways, in order to continue to grow.You have different choices to stress your muscles in different ways: Increase reps Increase sets Increase weight Decrease rest pe