Flexing your arms is a great way to show off your muscles and improve your range of motion. It can also help you to improve your posture and reduce your risk of injury. There are many different ways to flex your arms, and the best way for you will depend on your individual fitness level and goals.
One of the most common ways to flex your arms is to simply bend your elbows and bring your hands up to your shoulders. You can also flex your arms by extending them out in front of you and then bending your elbows to bring your hands back towards your shoulders. If you want to add some resistance to your arm flexes, you can use dumbbells or resistance bands.