Etymology and origins
The name Vajrasana denotes a medieval meditation seat, but its usage varied. The 15th century Hatha Yoga Pradipika called it a synonym of Siddhasana, where one of the heels presses the root of the penis; according to Yoga-Mimamsa III.2 p.135, this explains the reference to the vajra weapon.
The 17th century Gheranda Samhita 2.12 describes what Light on Yoga calls Virasana, with the feet beside the buttocks, while in other texts Vajrasana appears to mean the modern kneeling-down position, with the buttocks resting on the feet. The yoga scholar Norman Sjoman notes that Light on Yoga is unclear here, as its account of Laghuvajrasana has the knees and feet together, but it does not describe the basic Vajrasana.
The practitioner sits on the heels with the calves beneath the thighs. There is a four finger gap between the kneecaps, and the first toe of both the feet touch each other and sit erect.
Laghuvajrasana, an advanced pose in Ashtanga Vinyasa Yoga and Iyengar Yoga, has the thighs raised halfway from the sitting position, the crown of the head on the floor and the hands grasping the ankles.
The pose has speculatively and "unjustifiably" been linked to damage to the common fibular nerve resulting in foot drop, where dorsiflexion of the foot is compromised and the foot drags (the toe points) during walking; and in sensory loss to the surface of the foot and portions of the anterior, lower-lateral leg. In this context, one doctor has called it "yoga foot drop".
- List of asanas
- Seiza – Japanese traditional formal sitting posture
- Virasana – another kneeling asana, the name once also used for a cross-legged meditation asana
- "Learning Vajrasana (thunderbolt pose) and its benefits". Yoga and Health. 15 May 2018. Retrieved 15 November 2018.
- Budilovsky, Joan; Adamson, Eve (2000). The complete idiot's guide to yoga (2 ed.). Penguin. p. 203. ISBN 978-0-02-863970-3. Retrieved 11 April 2011.
- Sinha, S. C. (1 June 1996). Dictionary of Philosophy. Anmol Publications. p. 18. ISBN 978-81-7041-293-9.
- Sjoman, Norman E. (1999) . The Yoga Tradition of the Mysore Palace. Abhinav Publications. p. 79. ISBN 978-81-7017-389-2.
- Iyengar, B. K. S. (1979) . Light on Yoga: Yoga Dipika. Thorsons. pp. 372–373. ISBN 978-1855381667.
- "Supta Vajrasana". Ashtanga Yoga. Retrieved 5 July 2019.
- "Laghu-Vajrasana". Ashtanga Yoga. Retrieved 5 July 2019.
- Nelson, Dean (23 December 2010). "Yoga bad for your knees, Indian doctor warns". Telegraph. Retrieved 11 April 2011.
Many yoga gurus had suffered knee and joint problems from performing the 'vajrasana' posture [...]
- "Anatomy of Hatha Yoga: A Manual for Students, Teachers, and Practitioners CHAPTER 10. RELAXATION AND MEDITATION". DoctorLib.info. Retrieved 20 May 2019.
You will experience numbness and a clinical syndrome—someone cleverly but unjustifiably thought to call it “yoga foot drop”—in which you are unable to flex the ankle when you step forward.
- Chusid, Joseph (9 August 1971). "Yoga Foot Drop". JAMA: The Journal of the American Medical Association. 271 (6): 827–828. doi:10.1001/jama.1971.03190060065025.
- Broad, William J. (5 January 2012). "How Yoga Can Wreck Your Body". The New York Times Magazine. Retrieved 29 August 2012.