📖 Static demo — read-only snapshot
You’re browsing a static build of the Body IQ knowledge graph, so everything loads with no backend. A few things that need the live server are turned off here:
- Global search (sidebar) is disabled — it queries the API.
- The JSON API and the API “Try it” playgroundaren’t included.
- The data is a snapshot — it refreshes only when the demo is rebuilt, not live from the database.
Everything else — the body map, progression ladders, coverage heatmap, exercise finder, and all anatomy/exercise/source pages — works fully. The full app (live search + API + database) runs from the source on GitHub.
4-7-8 Breathing
Positions & Range of Motion
- Start
- seated upright and relaxed
- End
- same seated posture sustained through the 4-count nasal inhale, 7-count hold, and slow 8-count mouth exhale cycle
- Range of Motion
- isometric hold — minimal joint excursion; movement limited to rib-cage/diaphragm respiratory excursion
How to Perform
Inhale through the nose for 4 counts → hold for 7 counts → exhale through the mouth for 8 counts. Prolonged-exhalation slow-breathing pattern.
Opens a YouTube search for “4-7-8 Breathing”
Coaching Cues
- 1
Exhale should be slow and audible — like fogging a mirror
(verbal) - 2
If light-headed, shorten counts to 3-5-6 and rebuild
(verbal)
Evidence-Based Dosing & EMG Data
4 cycles per round, 1–2 rounds, 1–2×/day.
Muscles Involved (2)
Primary Movers
Synergists & Assistors
Easier Variations ↓
3-5-6 Variant
Smaller counts in the same ratio.
Harder Variations ↑
Repeat Multiple Rounds
Build to 3 rounds of 4 cycles.
Why This Exercise Matters
Everyday activities this exercise helps you do — essential means it directly trains the capacity the task needs:
Research Notes
Direct RCT evidence for the 4-7-8 ratio specifically is limited. Broader evidence supports prolonged-exhalation slow breathing for parasympathetic enhancement via Hering-Breuer reflex and baroreceptor activation [Little 2025; Zaccaro 2018].