Alpha Testo Max A common problem for people trying to build muscle is the fact that some muscles grow slower than others do. If you have this problem, target a particular groups of muscles with a fill set. A fill set of 25 to 30 repetitions should be performed on the targeted muscle groups about three days prior to the last workout.Alpha Testo Max Try learning your limits, but don't stop exercising until you use everything at your disposal. Keep pushing yourself to complete the exercises in a set even if you're tired. Don't stop until you literally cannot do any more of the exercise.