The role of shaping a perfectly symmetrical arm should not be underestimated. Recommend several movements that are easy to exercise your arm at ordinary times, which is beneficial to tighten your arm muscles.

1, open your feet shoulder width, straighten your body, put your hands behind your head, and grab your right elbow with your left hand and stretch slowly.

2. Find a pillar, hold the pillar with both hands, stand firm with your feet shoulder width, and naturally stretch backwards, staying for about ten seconds at a time and doing it several times.

3. Sitting in a chair, each hand lifts a dumbbell with an appropriate weight, exhales when lifting it, and then slowly puts it down so that the upper arm is in line with the shoulder.