Tuna¶
What it is: Tuna (吐納, tǔ nà), literally "exhale and inhale," is one of the oldest named Chinese breathing methods — the deliberate, slow cycle of letting the breath out and drawing it back in that sits at the root of breathing practice in qigong and tai chi.
Literal meaning¶
- Tu (吐) — "to spit out," "to exhale," "to release."
- Na (納) — "to take in," "to receive," "to inhale."
So 吐納 is literally "exhale and inhale."
The imagery transfer lives in the two characters. 吐 pictures the mouth (口, kǒu) releasing something outward — the breath spoken out, like spitting out the stale. 納 pictures silk (糸, the thread radical) being received and kept — the breath gathered in like fine thread drawn back. Notice the order: the word leads with the exhale, the letting-go. That sequence — out before in — is deliberate and echoes a central teaching that the release of the breath is the doorway into relaxation.
Historical context¶
Tuna is genuinely ancient. The term appears in early Daoist and nourishing-life literature, and its practice is pictured in the famous Mawangdui silk scrolls of the second century BCE — the same Han-dynasty archaeological find that shows the earliest known Dao Yin movement charts. Tuna and daoyin traveled together: daoyin as the movement-and-stretch half, tuna as the breath half. Over centuries, this breath-and-movement family of practices fed into what we now call qigong.
Traditional interpretation¶
Traditionally, tuna is understood as the way qi is moved by the breath: the exhale was described as guiding qi downward (the phrase 氣沉丹田, qì chén dāntián, "qi sinks to the dantian"), the inhale as gathering it. Slow, quiet, deep breathing was held to build and conserve qi; quick, shallow breathing to scatter it. The practice was a core method of yang sheng — nourishing life.
Modern explanation¶
Read without metaphysics, tuna is simply slow, deliberate abdominal breathing, with the emphasis on the exhale. That emphasis is well aligned with what is now known: a long, relaxed exhale may help engage the parasympathetic "rest and digest" response, and slow breathing (roughly six breaths per minute, though individual ranges vary) has been studied for its effects on heart-rate variability — a marker of the balance between stress and recovery. No belief in qi is required: tuna is a breath technique, and its relaxation effects are observable and trainable.
Related concepts¶
- Breathing — the modern term for the same cycle.
- Qi — the vitality breath was historically linked to.
- Dao Yin — the movement practice tuna is paired with.
- Qigong — the descendant practice that absorbed the method.
- Yang Sheng — the nourishing-life tradition tuna belongs to.
Common misunderstandings¶
- "Tuna is about eating fish." It is the pinyin of 吐納, "exhale and inhale" — unrelated to the English word for the fish, which is pure coincidence.
- "Tuna is a special, secret breathing trick." It is the ordinary deliberate breath cycle — out, then in — refined through slowness and attention.
- "You must breathe in first." The classical emphasis is exhale-first: the release opens the cycle.
- "It is obsolete, replaced by modern qigong." The term is old, but the exhale-first breath it names is still the backbone of qigong and tai chi breathing today.