Sanvic Tape helps to keep your mouth close to induce nasal breathing. Nasal breathing can maintain the humidity and temperature of air flowing into the airway, and also filter out or minimize foreign bodies, bacterias, or viruses from entering. Open mouth breathing may induces dry mouth, frequent urination at night, bad breathe, snoring, headache, loss of conentration, and fatigue. Anatomy shows that the simple act of opening your mouth will cause the upper airway to become narrowed and the tongue dropped backward. The narrow passage increases the speed of air flow and causes negative pressure and further collapses the airway (Bernoulli's Principle).