1, inverted pose: you can practice in the dormitory without barbells and other equipment. With the help of walls, you can effectively exercise your arm strength. Pay attention to safety when you stand upside down, and press your hips down. This action is often done, and the arm strength is improved quickly.

2, flat support against the wall: you can do it on the bed. Effective strength training will not only exercise arm strength, but the core strength of waist and abdomen. This action is very friendly to girls. Just try to keep your body in a straight line and stick to the limit.

3, you can do some arm stretching every day, you can stretch your arm 360 degrees, which is good for improving your arm strength. To sum up, just move your arms more. If you are too lazy to lift your arms at ordinary times, your strength will get smaller and smaller.