4-7-8 breathing is a breathing technique that can help to reduce stress, anxiety, and improve sleep. Here are the steps: Breathe in for 4 seconds Hold for 7 seconds Breathe out for 8 seconds Should you breathe through your nose or mouth? Go with what feels comfortable and relaxing — but here’s what many people find helpful: - Breathe in softly through your nose - Breathe out through your mouth, like you’re softly blowing on hot food to cool it down - Or simply breathe in and out through your nos