When you're feeling stressed, scattered, or overwhelmed, focusing on a longer exhale will help neutralize those feelings and settle both the mind and body. The extended exhale breath is neurologically tied to the relaxation response in the brain.
When your exhale is even a few counts longer than your inhale, the vagus nerve (running from the neck down through the diaphragm) sends a signal to your brain to turn up your parasympathetic nervous system and turn down your sympathetic nervous system. The parasympathetic nervous system is responsible for to relaxing or reducing your body's activities.
BOX BREATHING
Sit or lie down comfortably in a quiet place. Close your eyes and relax your body as much as you can.
Set a timer for 30 seconds.
Take six slow deep breaths in through your nose and out through your nose or mouth, focusing on your inhalation and exhalation.
Repeat as needed.