As you breathe in, allow your belly to expand as you fill up with air. Breathe deeply until you cannot take in any more air. Then, engage your belly, bringing your belly button closer to your spine as you exhale. Engage your diaphragm as you push out all of the air.
This type of breathwork is commonly used to improve focus and awareness, as well as reduce stress. It is so effective that it is often used in training programs for Navy SEALS. To do this style of breathwork, it can be helpful to envision a box when breathing, with each step of the exercise making up one side of the box. Begin by inhaling for a count of four, then hold for four counts.
Next, exhale for a count of four, and then hold again for another four counts. As you practice and get comfortable with this breath, experiment with the size of your box by lengthening the time spent in each portion of the exercise.
This breathwork pattern can help put you into a state of deep relaxation. To begin, breathe in through your nose for four counts. Then hold for seven counts. Slowly exhale through pursed lips out of your mouth for eight counts. Repeat this up to four times.