1 arm
The arm is the most commonly used part in our daily life. The arm generally mainly exercises the upper arm and forearm. The upper arm consists of biceps brachii and triceps brachii. The function of the two heads is mainly to bend our arms, and the function of the three heads is to straighten my arms. The classic movements of arm training are mainly flexion (two heads) and flexion (three heads). The forearm consists of many muscles of different sizes, and the bones are mainly ulna and few bones.
Shoulder 2
Shoulder exercises mainly exercise deltoid and rotator cuff muscles. The deltoid contains three independent heads: the anterior deltoid (toe), the lateral deltoid (middle) and the posterior deltoid (back). The main exercise sites of rotator cuff muscles are supraspinatus, infraspinatus teres minor and subscapular muscles. The classic movements of shoulder exercise are mainly various horizontal lifts (front horizontal lift, side horizontal lift and oblique horizontal lift).
3 times
Back exercises, mainly trapezius, latissimus dorsi and erector spinae. Among them, trapezius and latissimus dorsi are mainly responsible for the movement of shoulders and arms, and erector spinae is responsible for the movement of spine and trunk. Classic back exercises are mainly rowing and pull-ups.
4 boxes
The main chest exercises are pectoralis major, serratus anterior and pectoralis minor. The most common gym exercise is to exercise pectoralis major. The classic action to exercise chest muscles is mainly barbell bench press.
5 abdomen
Abdominal exercise is mainly to exercise abdominal muscles and side walls. Among them, the abdominal muscle is usually considered as rectus abdominis, while the lateral wall is the external oblique muscle and the internal shoe machine. The main action of exercising abdominal muscles is to roll the abdomen.
Six-legged hips
Legs and hips We mainly exercise our quadriceps, hamstrings and gluteus maximus. Among them, the classic movement to exercise legs and buttocks is squat.