1. bench press: mainly practice the thickness of pectoralis major and thoracic groove.

Action: put the dumbbell on the bench with both hands, put the dumbbell on the shoulder, and palm up. Push the dumbbell up until the arm is straight, stop for a while, and then slowly recover. Tip: Push-ups and squats are curved, so that pectoralis major can be fully contracted and fully extended.

2. Sleeping bird: mainly practicing the chest groove.

Action: On the supine stool, hold dumbbells with both hands, palms facing each other, and naturally stretch your arms over your chest. The elbow of the arm is slightly bent to lower the dumbbell to the lowest point on both sides, the pectoral muscle is fully extended, and the pectoral muscle is forcibly contracted to lift and restore the arm.

shoulder

1. Push: mainly practice the deltoid.

Action: Sitting posture, holding the dumbbell with both hands to the side, elbow abduction, palm forward, pushing the dumbbell to the highest point in an arc, stopping for a moment, and slowly controlling the dumbbell to recover according to the original route (arc). Tip: You can also do it standing, with both arms at the same time, or with one arm.

2. Side lift: mainly practice the middle bundle of deltoid muscle.

Action: Hold two dumbbells in front of your legs, lean forward slightly, bend your elbows slightly, lift the dumbbells to shoulder height on both sides, make the deltoid muscle in the "peak contraction" position, pause for a moment, and then slowly control the shoulder muscles. You can also do it with one arm and rotate with both arms.

department

1. Bend over and paddle with both arms: mainly practice latissimus dorsi.

Action: bend your knees slightly, hold dumbbells in both hands and hang them in front of you. Use the contraction force of latissimus dorsi to pull the dumbbell to the elbow level or slightly higher than the shoulder, then stop for a while, and then use the tension of latissimus dorsi to control the dumbbell to recover slowly. Note: when rowing, latissimus dorsi mainly contracts and stretches, and the upper body should not be lifted to avoid borrowing.

2. Bend over and paddle with one arm: mainly practice the outer back and lower back.

Action: Hold the dumbbell with the palm inward, and hold the fixture at the knee position of the same leg with the other hand to stabilize the body. Lift the dumbbell to the waist position (the back muscles are fully contracted), stop for a while, then slowly recover in a controlled way (fully stretch the back muscles), and then change one side to the other after completion.