Friend, maybe your age is between 16-20 years old and you are growing up, so you can only see the height but not the width. At the age of 23, it's hard not to widen. So don't worry, time will help you solve everything. Moderate exercise accelerates this process. I wish you good health and become a celebrity.

Push-ups!

Once a day, 7 groups each time, each group 15, and each group has a rest for 5 minutes! So 1 month will be effective, but it will be difficult at first, especially the next day!