All you have to do is move slowly (enough to stimulate muscles) and reduce the number of movements. Increase the number of groups. Pay attention to the rest time between actions. Your fatigue is a reaction of the central nervous system. It's not a muscle reaction. Pay attention to rest at noon Also, pay attention to the accuracy of your movements and don't blindly increase your weight. Bodybuilding pays attention to light but not fake. It's about preferring to lose weight Don't want to make a big mistake.