1. Push-ups: Push-ups are a very effective exercise to exercise arm strength. You can do push-ups on the ground or on the wall, and do multiple groups of exercises every day, each group 10- 15 times.

2. Sit-ups: Sit-ups can exercise abdominal muscles and arm muscles. You can do sit-ups on the floor or in bed, and do multiple groups of exercises every day, each group 10- 15 times.

3. handstand: handstand is a challenging sport, which can exercise the arms, shoulders and core muscles. You can do handstand support on the wall or bracket, and do multiple groups of exercises every day, each group 10- 15 times.

4. elastic belt exercise: elastic belt is a very convenient fitness equipment, which can be used for various arm strength training. You can bend, push and bend your arms with elastic belt, and do multiple exercises every day, each group 10- 15 times.

5. Yoga ball rolling arm: Yoga ball rolling arm is a very interesting arm strength training method. You can lift the yoga ball over your shoulders, then roll it up with your arms and put it down slowly. Do many groups of exercises every day, each group 10- 15 times.