It depends on the purpose of fitness. What about physical strength? What about endurance? I mean the type of muscle growth is about 80 minutes of muscle growth training. You need a muscle group for every training. Compared with me, I said that I will use my triceps brachii, latissimus dorsi and biceps brachii to practice my chest muscles tonight. I will train my leg muscles with my shoulder muscles. I will use my arms and forearms to train my leg muscles. I think I need to strengthen my muscle speed. What muscles are faster to practice? I can practice my chest muscles with latissimus dorsi. I will practice my oblique muscles. I will rest for the seventh time. 1 practice me. I suggest that abdominal muscles should be practiced every other arm. Consider the special laws of muscles. If you want to gain muscle in each training room for about 30 minutes, you must pay attention to the supply and regularity of sleep nutrition. I write some books myself. My fitness plan is basically based on principles, unless professional bodybuilders want to adopt it. Thank you.