How do yoga positions open up the chakras?
Even though the chakras are often described using physical qualities, these are energy centers in the body. Yoga effects the energy of the body, and using yoga postures that focus on the chakra centers will stimulate them allowing the energy to flow and open. Stress and tension (physical as well as emotions and thoughts) that accumulate in the areas of the chakras will obstruct the flow of energy, and make the chakras close down. When these areas are stretched, twisted, pressed into and lengthened (though yoga), the stress and tension in these areas are released, and the energy of the chakra can flow and open.