Ujjayi breathing may be used continuously throughout Ashtanga Vinyasa Yoga, and is frequently used in Power Yoga and Vinyasa, or Flow Yoga. This breathing technique enables the practitioner to maintain a rhythm to his or her practice, take in enough oxygen, and helps build energy to maintain the practice, while clearing toxins out of the bodily system. This breath is especially important during the transition into and out of asanas (postures), as it helps practitioners to stay present, self-aware and grounded in the practice, which lends it a meditative quality.