Find a wall or flat surface to provide back support during this advanced pranayama technique.
Close your eyes and your mouth. Slowly and gently inhale and exhale through your nose. The breath should be deep but not forced and should fill your abdomen up through your chest to the top of your collar bone, before retreating during the exhale. Slowly repeat this a few times.
As you inhale, focus your attention and imagine there is a tiny tube or cord that originates at your perineum and stretches up through your spine to the stem of your brain and terminates at the center of your head. Once your attention reaches your head, imagine a tiny nerve turns forward to reach the point between your eyebrows.
With each slow inhale, imagine energy funneling up from your perineum up to the point between your eyebrows and then back down again to your perineum. Repeat this with each breath.
This exercise should be done for a few minutes before meditation. Remain seated when you are finished with the exercise and begin meditation immediately.
Benefits of this exercise: http://www.parentingweekly.com/pregnancy/breathingspace/vol14/pregnancy_exercise.asp
