4-7-8 breathing is a paced-breathing pattern that counts four units on the inhale, seven units holding the breath, and eight units on the exhale. Paced-breathing routines are used in many traditions as a way to slow respiration, lengthen exhalation, and bring attention to bodily sensations. Counting provides a simple structure that makes it easier to practice consistently without external tools.
Many people try paced breathing while seated or lying down for brief sessions. The numbers are guidelines rather than strict rules; individuals often adjust the tempo to remain comfortable. As with any technique involving breath holds, gentle practice and self-awareness are appropriate, and people commonly discontinue if they feel lightheaded.