Breathe from your belly
Take a deep breath, guiding air into your belly instead of your chest. Breathing like this helps the diaphragm tighten and move downward when you inhale to give you more space in your chest cavity, and helps the air escape more powerfully when you exhale. “This type of breathing literally gives you more life,” writes Burton. “It energizes you, relaxes you, sharpens your mental state, and calms your emotions.” Plus, your voice will sound stronger, which will make it seem like you radiate confidence. (These healthy-lung foods could help you breathe better.)
Work on your posture
“Poor posture constricts your breathing and weakens the airflow that will support your voice’s power source,” writes Burton. To make sure your slumping doesn’t hold back your ideas, open your chest and lift your head as you consciously stand or sit up straighter. Start with these tips to improve your posture.