At our meditation retreats, yogis practice mindfulness in four different postures. They practice mindfulness when walking, when standing, when sitting and when lying down. They must sustain mindfulness at all times in whatever position they are in.
The primary posture for mindfulness meditation is sitting with legs crossed. But because the human body cannot tolerate this position for many hours without changing, we alternate periods of sitting meditation with periods of walking meditation. Since walking meditation is very important, I would like to discuss its nature, its significance, and the benefits derived from its practice.
The practice of mindfulness meditation can be compared to boiling water. If one wants to boil water, one puts the water in a kettle, puts the kettle on a stove, and then turns the heat on. But if the heat is turned off, even for an instant, the water will not boil, and if one continues to turn the heat on and off, the water will never boil. In the same way, if there are gaps between the moments of mindfulness, one cannot gain momentum, and so one cannot attain concentration. That is why yogis at our retreats are instructed to practice mindfulness all the time that they are awake—from the moment they wake up in the morning until they fall asleep at night. Consequently, walking meditation is integral to the continuous development of mindfulness.