Hello, my friend, the matching of fitness plans is a very scientific thing. My personal opinion is that there are three major muscle groups. The main strength of pectoralis major training is the deltoid toe. The main muscle groups for back training of triceps brachii teres major serratus are rhomboid latissimus dorsi and toe of trapezius deltoid. The main muscle group that produces strength in leg training is quadriceps femoris. Biceps muscles include hamstring, gluteus maximus and calf muscles. Generally speaking, the main strength muscle group and the cooperative muscle group can be trained on the same day, for example, the chest training day can be matched with the shoulder or triceps brachii back training day can be matched with the biceps brachii or shoulder muscles (generally, a large muscle group can train at most two small muscle groups at a time ... except for special training methods). Muscles that react with each other can also be trained together, such as biceps brachii and triceps brachii. Quadriceps femoris and biceps femoris (super group recommended for reactive muscle training). It is best to train the auxiliary muscle group every two days. The training interval of large muscle groups should not exceed twice a week, and the interval should not be less than three days. In fact, the training plan is very casual. As long as you follow the above training and rest elements, you can combine them at will. The following is an example of the plan I used. You can refer to Monday, thigh, Tuesday, back, abdomen, chest, calf, shoulder, abdomen and Thursday. Muscle Friday, arm and calf rest on Saturday and Sunday. In this plan, all large muscle groups can be trained once and small muscle groups can be trained twice. The schedule is reasonable, I hope it will help you.