Remember to breathe with your diaphragm.
Google results of that sentence can explain the benefits of diaphragmatic breathing (Fun and telling fact: We were born breathing that way).
Here’s an exercise for it: lie on your back, one hand on the stomach, another on the chest. Inhale for six seconds, hold for two, and exhale for six. Don’t let your chest rise (the hands are for measuring that rising).
If you already do this, good work!