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Zazen: how Zen sitting meditation actually works

Written and reviewed by The Kriya Yogi · Updated 25 September 2026

If Zen is a house, Zazen is the foundation. The word literally means 'seated Zen' (*za* meaning seated, *zen* meaning meditation). While Zen includes many activities—from chanting to work practice—the act of sitting still on a cushion is where the transformation truly happens. Zazen is not about achieving a special state of mind or having a mystical experience; it is about returning to the most natural, fundamental state of human existence. It is the practice of 'sitting in the middle of the fire' of our own thoughts and emotions, without being consumed by them.

The short answers

  • Zazen is the central practice of Zen Buddhism, emphasizing physical posture and breath.
  • The goal is not to stop thoughts, but to let them pass without attachment.
  • Shikantaza ('just sitting') is a hallmark of the Soto Zen school.
  • Proper alignment of the spine and hips is essential for long-term practice.
  • Zazen is often practiced in a group setting (Zendo) and in intensive retreats (Sesshin).

The Physical Foundation

In Zazen, the body and mind are not two separate things. The way you hold your body directly affects the state of your mind. Traditional Zazen is practiced on a round cushion called a zafu, which helps tilt the pelvis forward and keep the spine naturally erect.

The Posture

There are several ways to position the legs, depending on flexibility:

  • Full Lotus (Kekka Fuza): The most stable but difficult position, where each foot rests on the opposite thigh.
  • Half Lotus (Hanka Fuza): One foot rests on the opposite thigh, while the other is tucked under.
  • Burmese Position: Both legs are folded on the floor in front of you, one in front of the other.
  • Seiza: Kneeling with the help of a bench or a cushion placed between the heels.

Regardless of the leg position, the spine should be straight but not rigid, the chin tucked slightly, and the crown of the head reaching toward the ceiling. The eyes are kept slightly open, looking down at a 45-degree angle, to prevent both sleepiness and distraction.

The Cosmic Mudra

The hands are placed in the 'Cosmic Mudra.' The dominant hand rests palm up in the lap, the other hand rests on top of it, and the tips of the thumbs lightly touch to form an oval. This hand position is a sensitive barometer of your state of mind; if you become drowsy, the thumbs will droop; if you are agitated, they will press together too hard.

Breathing and Mind

In the beginning, students are often taught to count their breaths—from one to ten—to help settle the wandering mind. As the practice matures, this is replaced by simply following the breath, feeling the air move in and out of the abdomen (the hara).

Shikantaza: Just Sitting

In the Soto school, the ultimate form of Zazen is shikantaza. This is a state of 'objectless' meditation. You aren't focusing on the breath or a mantra; you are simply 'just sitting.' It is a state of total, non-judgmental awareness. You observe the thoughts, sounds, and sensations that arise, but you do not 'board the train' of thought. You stay on the platform and watch the trains go by.

The Zendo and Sesshin

While Zazen can be done at home, it is traditionally practiced in a Zendo (meditation hall) under the guidance of a senior practitioner or teacher. The environment is one of silence and strict etiquette, which helps to minimize the ego's tendency to wander.

The most intensive form of Zazen is the Sesshin, a retreat lasting anywhere from three to seven days. During a Sesshin, practitioners spend up to ten or twelve hours a day in Zazen, interspersed with walking meditation (kinhin), formal meals (oryoki), and work periods. It is a grueling but often deeply clarifying experience that allows the practitioner to see through the 'small self' and touch the 'Big Mind.'

Zazen in Daily Life

The ultimate aim of Zazen is not to become a 'good sitter,' but to carry the stability and clarity found on the cushion into every aspect of life. Whether you are washing dishes, driving a car, or talking to a friend, the quality of 'seated Zen' should remain. This is what the masters mean by 'Zen in motion.'

Approaching it with care

  1. Get a Zafu

    Using a proper meditation cushion (zafu) provides the necessary height to keep your knees below your hips, protecting your back.

  2. Straighten the Spine

    Imagine a string pulling the top of your head upward; a straight spine allows for natural, deep breathing.

  3. Eyes Open

    Keep eyes slightly open to stay grounded in the present environment and avoid falling into daydreams.

  4. Soft Breathing

    Don't force the breath; let it settle into the lower abdomen (hara) naturally as you relax.

  5. Release Thoughts

    When you realize you're thinking, gently return your attention to your posture and breath without judgment.

Cautions worth reading

  • Avoid pushing through sharp joint pain, especially in the knees; adjust your posture or use a chair if necessary.
  • Don't turn Zazen into a competition with yourself or others regarding how long you can sit.
  • Be wary of 'Zen sickness'—becoming overly detached from the world or obsessed with meditative states.

What scholars and evidence say

Extensive neurological research into Zen meditation, particularly the work of James H. Austin in 'Zen and the Brain,' suggests that Zazen fosters 'bare awareness' by modulating the activity of the amygdala and the prefrontal cortex, leading to improved emotional regulation and cognitive flexibility.

Questions people ask

+ Why keep the eyes open during Zazen?
To remain connected to the external world and avoid falling into a trance or sleep.
+ How long should I sit for?
Beginners often start with 10-20 minutes. Regular practitioners typically sit for 25-40 minutes at a time.
+ What should I do if my legs fall asleep?
It is common and usually harmless. If the pain is distracting, you can slowly and mindfully adjust your position during kinhin (walking meditation).
+ Is Zazen just a form of mindfulness?
While similar, Zazen is specifically a Buddhist practice aimed at realizing one's Buddha-nature, often involving more rigorous posture and environmental discipline.
+ Can I practice Zazen in a chair?
Yes. The most important thing is a straight spine and an alert mind; many people use chairs due to physical limitations.

Sources

  • Dogen Zenji, Fukanzazengi (Universal Guide to the Standard Way of Zazen)
  • Kosho Uchiyama, Opening the Hand of Thought
  • Taizan Maezumi, On Zen Practice
  • James H. Austin, Zen and the Brain

Taoism and Zen are living traditions, best approached with a teacher or community where possible. Nothing here is medical advice; check with a clinician before starting a new movement or meditation practice if you have a health condition.