Flexing your pecs, or pectoral muscles, is a great way to show off your physique and improve your posture. It can also help you to increase your strength and range of motion in your shoulders and chest.
To flex your pecs, stand up straight with your feet shoulder-width apart. Place your hands on your hips, with your elbows out to the sides. Inhale deeply and expand your chest, pushing your shoulders back and down. Exhale slowly and squeeze your pecs together, bringing your elbows forward and down. Hold the contraction for a few seconds, then relax and repeat.
