Controlled Breathing 4-7-8: Sleep & Calm This rhythmic pattern acts as a natural tranquilizer for the nervous system, helping you transition into deep relaxation or sleep. The Rhythm: Inhale: 4 Seconds Hold: 7 Seconds Exhale: 8 Seconds Like and subscribe for daily calming breathing exercises. Try the Pocket Breath Coach app to customize the breathing exercise, practice offline, set reminders to do breathing exercises, and more! Available on the App Store and Google Play. Breathing in a slow, ste