Alpha X BoostIf your muscle-building regimen is actually working, you should be getting stronger. The stronger you get, the heavier the weight you will be able to manage during your training. For example, every second workout, you should be able to lift 5% more than the last time. You need to reassess your program if your progress is slower than this. If you find yourself feeling more fatigued after your fitness routine, your body may be having problems recovering.