Question 2: The classic ones are chest and brachial, abdomen, back and biceps brachii, and one lower limb.
Question 3: Generally speaking, it is differentiated training. The large muscle group of human body is divided into 12 parts. Focus on practicing a few pieces a day, so that muscle growth will be more obvious. Both chest and humerus are pushing functions, so it is more targeted to practice together.
Of course, there are still various combinations, all of which have their reasons.
The fourth question is a bit big. Super group and alternate training can save time, and have certain requirements for physical strength and training experience, which beginners can't practice well; For example, deltoid muscle and biceps brachii should be practiced together, and then deltoid muscle should be practiced. Because triangle congestion will compress biceps brachii, and then practicing biceps brachii may cause discomfort. The combination of question two is more suitable for beginners. Each training plan can be discussed in detail. Therefore, it is necessary to learn theoretical knowledge when training the body, so as to practice well.