In daily life, the arm is the most active part, but most of the stretching direction is only the front or side. Because there is less movement in the back, the inner arm part is easier to relax. Moreover, the unused parts of muscles are very easy to accumulate fat, especially after the age of 25. In any case, to have strong muscles, you must cover everything.

1, exercise the inner arm to make it strong.

Hands crossed, thumbs down, arms extended forward. After standing still for 2~3 seconds, put your hands back in reverse and extend forward for about 2~3 seconds. Slowly for about 10~20 times.

2. Make your arms nervous.

Massage your shoulders with one hand and keep shrugging. The pressed hand keeps pressing down on your arm, especially the inner muscles of your arm. * * * 5 times in about 5 seconds.

3. Improve the relaxation of the inner arm

Cross your palms at your ears, stretch upward and exert yourself, rest for 2~3 seconds and then relax. Exercise the muscles that you don't usually use, and at the same time you can give a positive attitude. * * * 5~ 10.