Before performing the pose, determine two things about your support: its height and its distance from the wall. If you're stiffer, the support should be lower and placed farther from the wall; if you're more flexible, use a higher support that is closer to the wall. Your distance from the wall also depends on your height: if you're shorter move closer to the wall, if taller move farther from the wall. Experiment with the position of your support until you find the placement that works for you.
Step 2:
Start with your support about 5 to 6 inches away from the wall. Sit sideways on right end of the support, with your right side against the wall (left-handers can substitute "left" for "right" in these instructions). Exhale and, with one smooth movement, swing your legs up onto the wall and your shoulders and head lightly down onto the floor. The first few times you do this, you may ignominiously slide off the support and plop down with your buttocks on the floor. Don't get discouraged. Try lowering the support and/or moving it slightly further off the wall until you gain some facility with this movement, then move back closer to the wall.
Step 3:
Your sitting bones don't need to be right against the wall, but they should be "dripping" down into the space between the support and the wall. Check that the front of your torso gently arches from the pubis to the top of the shoulders. If the front of your torso seems flat, then you've probably slipped a bit off the support. Bend your knees, press your feet into the wall and lift your pelvis off the support a few inches, tuck the support a little higher up under your pelvis, then lower your pelvis onto the support again.
Step 4:
Lift and release the base of your skull away from the back of your neck and soften your throat. Don't push your chin against your sternum; instead let your sternum lift toward the chin. Take a small roll (made from a towel for example) under your neck if the cervical spine feels flat. Open your shoulder blades away from the spine and release your hands and arms out to your sides, palms up.
Step 5:
Keep your legs relatively firm, just enough to hold them vertically in place. Release the heads of the thigh bones and the weight of your belly deeply into your torso, toward the back of the pelvis. Soften your eyes and turn them down to look into your heart.
Step 6:
Stay in this pose anywhere from 5 to 15 minutes. Be sure not to twist off the support when coming out. Instead, slide off the support onto the floor before turning to the side. You can also bend your knees and push your feet against the wall to lift your pelvis off the support. Then slide the support to one side, lower your pelvis to the floor, and turn to the side. Stay on your side for a few breaths, and come up to sitting with an exhalation.
Beginner's Tip:
Use your breath to ground the heads of the thighs bones into the wall, which helps release your groins, belly, and spine. In the pose imagine that each inhalation is descending through your torso and pressing the heads of your thigh bones closer to the wall. Then with each exhale, pin your thighs to the wall and let your torso spill over the bolster away from the wall and onto the floor.
Modifications and props:
In addition to a bolster or blanket for support, two props are very popular for Viparita Karani--a strap and a sand bag. Once in the pose you can snug the strap around your thighs, just above the knees. The strap will help hold your legs in place, allowing you to further relax the legs and soften the groins.
The sand bag is a little harder to get in place. Once in the pose, bend your knees and slide your feet down the wall, but keep your ankles flexed, soles parallel to the ceiling. As best you can, lay the bag across your soles (or heels) and then re-straighten the knees, pushing the bag actively toward the ceiling. This weight on the legs helps release tension in the lower back.
Partnering:
A partner can also help you ground the heads of the thigh bones into the wall. Have her stand at your head as you perform the pose. She should then lean forward and spread her hands around your front thighs, just where they join the pelvis. On your inhale she should push the thighs closer to the wall, and as you exhale, she should hold them firmly to the wall as you release the front torso away from the thighs. Repeat for several breaths.
Gently stretches the back legs, front torso, and the back of the neck
Relieves mild backache
Calms the mind
Therapeutic Applications:
Gheranda heaps praise on this pose (though that he's probably talking about a version more akin Headstand) and states that Viparita Karani "destroys" old age and death. "You will become an Adept in all the worlds and will not perish even at world dissolution (pralaya)" (Gheranda Samhita 3.36).
Svatmarama (who's probably got something more like shoulderstand in mind) claims that after six months of practice, "grey hairs and wrinkles become inconspicuous" (Hatha Yoga Pradipika 3.82). We should take these traditional benefits with a pinch of salt. Modern teachers do, however, believe that Viparita Karani is good for most everything that ails you, including:
Anxiety.
Arthritis
Digestive problems
.
Headache
.
High and low blood pressure
.
Insomnia.
Migraine.
Mild depression
.
Respiratory ailments
.
Urinary disorders
.
Varicose veins
.
Menstrual cramps
.
Premenstrual syndrome
.
Menopause.
Contraindications and Cautions:
Many teachers maintain that Viparita Karani is an inversion, and as such should be avoided during menstruation. Others though recommend the pose even during menstruation. Check with your teacher before performing this pose during menstruation. As with any inversion Viparita Karani should be avoided if you have serious eye problems, such as glaucoma. With serious neck or back problems only perform this pose with the supervision of an experienced teacher. If your feet begin to tingle during this pose, bend your knees, touch your soles together, and slide the outer edges of your feet down the wall, bringing your heels close to your pelvis.