The conditions for muscle growth are: high androgen level (enough for men), overload training, high intake of protein and adequate rest.
It's right to practice one part at a time, which can fully stimulate the target muscles, improve training efficiency, try to overload training, then go back and eat more meat, eggs, milk or protein powder, and give muscles a rest time of 48 hours, so as to grow fast! ! !
It is suggested to do a five-day cycle: chest on Monday, back on Tuesday, shoulder on Wednesday, arm on Thursday, leg on Friday, one day off on Saturday, and continue the next cycle on Sunday.