Headstand explained honestly: prerequisites, neck load, what remains of the brain blood-flow myth and who should avoid it. With safer alternatives.
Should every yoga practitioner learn the headstand? The honest answer: no. The headstand (Salamba Sirsasana, "supported headstand") is called the "king of the asanas", but in the literature it is the posture most often associated with injuries. In a review of 84 reported yoga adverse events, 15 cases (18%) involved the headstand, followed by forced breathing; overall, 54% of those affected had pre-existing vulnerabilities [1].
The headstand is an inversion on the head and clasped forearms, where the main weight should be caught by the shoulders and forearms. It is safety-critical. This guide is therefore above all instruction on how to decide whether and when to practise it at all.
And the myth? "The headstand boosts blood flow to the brain." An ultrasound study of 20 people showed the opposite: blood flow through the carotid artery fell in the headstand, consistent with the brain's autoregulation [3]. So you don't need the headstand to "perfuse" your brain.
Answer three questions honestly: Do you hold Dolphin with stable shoulders? Is your neck pain-free? Do you have a teacher? If one answer is no, keep practising Dolphin and leave the headstand for later.
Milestone: Dolphin 10 breaths, three times in a row, shoulders carrying.
Kneel, forearms on the mat, elbows shoulder-width, hands clasped. The head rests with the crown (not the forehead and not the back of the head) lightly in the hands. The weight belongs on the forearms and shoulders; the head only touches.
Lift the knees off the floor and walk the feet close to the head, as in Dolphin. Actively press the shoulders away from the floor.
With guidance you lift one leg slightly, in a controlled way, and set it down again. The trunk stays over the shoulders. The hips stand over the head, not in front of it. Everything further you practise with a teacher or spotter and, if needed, with the wall behind you.
Milestone to move on: you lift one leg in a controlled way and set it down without the head taking load.
A motion analysis of 45 practitioners found that at the moment of peak load the head bore 40 to 48% of body weight (at 70 kilos that is about 28 to 34 kilos, roughly two full crates of drinks). Entering with straight, closed legs tended to show the lowest loads and a more neutral cervical spine than flexed or asymmetric entries [2]. This is a principle for your teacher to explain, not an invitation to try it alone.
Just as important as the entry: controlled, don't drop. Afterwards into Child's Pose, at least 10 breaths, until blood pressure and dizziness have normalised.
Contraindications: glaucoma or raised intraocular pressure, retinal disease, high blood pressure, cervical spine injuries or surgery, osteoporosis, dizziness, pregnancy. A case report describes progressive glaucoma damage in a patient who practised the headstand daily [4]. If you have any of these conditions, skip the headstand.
In a German survey of 1,702 yoga practitioners, hand, shoulder and head stands were the most frequent practice behind acute adverse effects (29.4%); those who practised only by self-study without instruction had a higher risk [5]. That is the central message: don't practise the headstand alone.
This guide explains and motivates; it does not replace supervised training or medical advice. A headstand is not a milestone you have to reach.
Deliberately choose Dolphin as your goal. It trains the shoulders and trunk you need in the headstand, but doesn't load the neck, and it is a full path: many practitioners stay there and benefit just as much. A headstand is in the end only a balancing feat. Dolphin is the part that makes you stronger.
It is the posture most often associated with injuries in case reports [1]. The risk rises with pre-existing conditions such as glaucoma, cervical spine problems or high blood pressure, and with practice without guidance [5]. For healthy people with a teacher and a build-up the risk is smaller, but not zero.
No, that is a widespread myth. An ultrasound study of 20 people showed falling blood flow through the carotid artery in the headstand [3]. The brain regulates its own blood flow; you don't need a headstand for that.
With guidance, only a few breaths at first. Longer brings no plus but more load on the neck. As a precaution: the shorter the safer, and always with a controlled exit.
Dolphin (forearm support with hips high), Bridge Pose or legs up the wall. They train shoulders and trunk and give you an inversion feeling without neck load. You lose nothing if you skip the headstand.
Butterfly / Bound Angle (Baddha Konasana): Open the Hips Without Punishing Your Knees