1. Take a dumbbell or a bottle filled with water (or sand) and straighten it from front to back. Remember to stick to yours.

Do this with your ears.

2. Put it down slowly and repeat this action fifteen times. When you finish, your upper arm will feel sour. That's right.

Yes, you can do it forty-five times a day, and you can do it separately.

The second secret of thin arms:

Lift the right arm, bend the left scapula behind you, press the joint of the right arm with your left hand and touch the left scapula.

Bone, then high stretching, left and right sides, do this 20 times a day.

If you feel sore from the beginning, it means you have moved to that part.

The third secret of thin arms:

1. Stand with your hands straight forward and your feet shoulder width apart.

2. Draw a circle with both hands and draw a circle outward for 20 times.

3. Draw a circle inward 20 times.