Upper back muscle training
Mainly trains back muscles, abdominal muscles, forearms, and biceps.
Find a railing lower than your waist, with your back facing the ground and your feet flat on the ground. Then hold the railing with both hands (if you are not strong enough, you can use your arms to hook the railing back), and use the power of your chest to get closer to the railing. Hold the shoulder blades for 2 seconds and repeat.
It is recommended to do it 2 to 3 times a week, 3 times each time, a total of 8 times, with an interval of 60 seconds each time.
