Box Breathing

Four equal phases — inhale, hold, exhale, hold — repeated on a fixed count. A modern tactical breathing drill that imposes a slow, regular breath rate under a simple structure.

DIFFICULTY
Beginner
EQUIPMENT
Bodyweight · Timer
PRIMARY MUSCLES
Diaphragm
ALSO WORKS
Transverse Abdominis
HOW TO DO IT
  1. 01Sit upright in a chair or on the floor, feet grounded, hands resting on the thighs.
  2. 02Inhale through the nose for a count of 4.
  3. 03Hold the breath in, without clamping the throat or bearing down, for a count of 4.
  4. 04Exhale through the nose for a count of 4, then hold the breath out for a count of 4.
  5. 05Repeat for 5 minutes, roughly 18 to 20 rounds at a 4-count; keep the count at 4 rather than progressing to 5 or 6 until 4 is entirely comfortable.
  6. 06Finish by dropping the holds and breathing freely for one minute.
COACHING CUES
  1. 01Four sides, same length. Draw the square in your head if it helps.
  2. 02The hold is relaxed — air is sitting there, you are not gripping it.
  3. 03If you come out of a hold gasping, drop the count.
COMMON MISTAKES
  1. 01Bearing down against a closed throat during the holds, which raises pressure unnecessarily and is felt in the head and eyes.
  2. 02Chasing long counts. Extended retentions should never be forced, and this drill works fine at a 4-count indefinitely.
  3. 03Practising it while driving or in the water, where any light-headedness from the retention phases becomes a real hazard.

Note: Reference material, not a prescription. Load, volume and whether this movement suits you at all depends on your assessment — if something hurts, stop and get it looked at.

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