2. When breathing through the nostrils, the naturally inhaled air will pass through the nasal cavity, and the air will be wetted in the process. The main reason is that there are rich mucous membranes and mucus in the nasal cavity, so the air will be moist as soon as it comes in. The wetter the air, the easier it is for tracheal passages and lung cells to accept. This way of breathing can help yoga practitioners to establish a slow and deep breathing process. Through this extended breathing time, you can concentrate on feeling your inner feelings in practice. More importantly, if you master the way of nostril breathing in yoga practice, you can also master higher breathing skills and pranayama.