(1) habitual action

Everyone has the habit of using his right hand or left hand. If you often play table tennis with your right hand, take things and carry heavy objects, the nerves and muscles in your right arm will often be stimulated to a certain extent. Over time, its physiological function will change to a certain extent, and its absolute strength and endurance will be slightly greater than that of its left arm. This has been proved by experiments.

Because the strength and endurance of the left arm and the right arm are different, when doing barbell bench press, although both arms try their best to complete quantitative tasks, the stimulation intensity is different. The left arm has achieved benign stimulation, but the right arm is not enough.

Note: With the passage of time, the lines of triceps brachii, deltoid and pectoralis major on the left side of the left arm are gradually obvious, and the girth is slightly larger than that on the right side.

If beginners find that their left and right limbs are different in strength and endurance, or that one side of their body is too big, they should make the load borne by their arms and legs slightly different in each exercise.

For example, when recommending, cymbals can be slightly concentrated on the right arm; When bending with dumb cymbals, the right arm is larger in frequency and weight than the left arm (the size varies from person to person), so that after a period of practice, the muscles on both sides of the upper arm and upper body can develop in a balanced way. "Left-handed" is the opposite.

Unilateral training: a simple correction method! One-handed bench press, one-handed rowing and one-legged squat.

Pay more attention to and give priority to the disadvantaged in daily life! Adjust your habits slowly.

② Action posture

Incorrect posture can also cause large muscles on one side of the body. A slight difference in the movements of the two arms can change the intensity of the stimulus and the quality of the movements.

When bench press, one arm is completely straight and the other arm is slightly bent, or one arm is straight first and then straight, which will affect the balanced development of the muscles of both arms because of different stimulation intensities.

When doing parallel bars arm flexion and extension, the body's center of gravity is slightly biased to one side, which will change the angle of force, thus affecting the coordinated development of pectoralis major and deltoid muscles.

Preventive measures:

Try to keep the correct posture every time you practice evenly. This can not only get good training effect, but also avoid injury.

For example, when making a dumbbell bird, both hands should descend as low as possible according to the arc radius at both ends, straighten their arms and return to the starting position according to the original route, and both hands must descend and rise symmetrically in a straight line, otherwise the pectoralis major muscles on both sides will develop unevenly and look uncoordinated.

Please remember: as long as you keep the correct training posture and try your best to do it, you can make the muscles you want to exercise develop in a coordinated and balanced way.

References:

Baidu experience