In short: thunderbolt pose is the kneeling seat: knees together, shins on the floor, and the buttocks resting on the heels or the insides of the feet, spine upright and hands on the thighs. It is an alternative to cross-legged sitting for breathing practice and meditation. A blanket under the shins or between the thighs and calves, or a block under the seat, makes it comfortable for most knees and ankles.
Kneeling is one of the most natural ways to sit, and for people whose hips dislike crossing the legs it is often the most comfortable meditation seat. It also stretches the fronts of the thighs, shins and ankles. Below we explain the name and its history, how to set up the seat, precautions and related poses.
The name, and an older meaning
Vajra means thunderbolt, the weapon of the god Indra, and also diamond, for its hardness; the pose is called diamond pose too. The Bihar School’s Asana Pranayama Mudra Bandha describes Vajrāsana as kneeling with the big toes crossed, knees together and heels apart, the buttocks lowered onto the insides of the feet. Yoga Journal teaches the same kneeling seat, sitting on the heels, as an alternative to a cross-legged position.
The name has shifted over time. In the 15th-century Hatha Yoga Pradipika, Vajrasana is given as another name for accomplished pose, a cross-legged seat. Iyengar’s Light on Yoga uses Vajra in the names of advanced backbends such as Supta Vajrāsana and Laghu Vajrāsana, and the 26+2 hot yoga series uses Supta Vajrasana for a reclining kneeling pose. On this page Vajrasana means the simple kneeling seat that most classes teach today.
Setting up the seat
Kneel with the knees together and the tops of the feet on the floor, then sit back. If the tops of the feet or toe knuckles press painfully, Yoga Journal suggests resting the shins on a folded blanket with the toes hanging off the back edge. If the knees complain, place a folded blanket between the calves and thighs, or sit on a block placed lengthwise between or under the heels, which reduces the bend in the knee. Find a neutral pelvis, neither tipped forward nor back, so the spine can rise through its natural curves, and rest the hands on the thighs.
Look at the feet before you settle. In Yoga Journal, Roger Cole notes that the feet should point straight back, in line with the shins, so the knees are not twisted. The Bihar School version sits on the insides of the feet with the big toes crossed and the heels apart, and rests the hands on the knees. Once you are comfortable, the Bihar manual suggests closing the eyes and simply noticing the natural breath. That makes thunderbolt pose a quiet place to begin or end a practice.
Common mistakes, explained
- Toughing it out on bare floor. The tops of the feet and the knees take the weight. A folded blanket under the shins costs nothing and often turns an uncomfortable seat into an easy one.
- Slumping. If the lower back rounds, sit a little higher on a block or cushion so the pelvis can come upright.
- Sitting too long at first. Start with a minute or two and build up. Tingling or numbness in the feet is a sign to come out and stretch the legs.
- Standing up too fast. After a longer sit, lean forward onto the hands, untuck the legs one at a time and give the feet a moment before you stand.
Precautions in plain words
Do not sit through knee pain; Yoga Journal is clear on that. Use height under the seat until the knees are comfortable, and come out if the feet or legs go numb. People with knee injuries, recent knee surgery, or ankle or foot problems should ask a doctor or physical therapist which kneeling positions suit them; a chair is a good alternative. The Bihar School recommends sitting in Vajrasana after meals to help digestion; that is the school’s traditional advice rather than an established medical finding. This page is general information, not individual advice.
Preparation and related poses
Gentle quadriceps stretches and child’s pose prepare the knees and ankles. Related kneeling seats are hero pose, where the seat drops between the feet, and lion pose, often practised from kneeling. Reclining from the kneeling seat leads toward reclining thunderbolt, a much deeper backbend for experienced students.
The same kneeling seat is the starting point for two yin poses. In Bernie Clark’s descriptions on YinYoga.com, toe squat begins sitting on the heels with the toes tucked under, and ankle stretch begins sitting on the heels and leans back onto the hands. Clark also lists Vajrasana as a counterpose after a long squat, to release the knees and back.
Where it is used
Thunderbolt pose is a seat for breathing practices and meditation in hatha and Bihar School teaching, and a resting or transition position in many classes. Our guide on how to meditate covers seated posture.
