Hello dear, don't worry,Your problem of yawning is not due to permanent Defeciency of the Oxygen ,It is due to requirement of lungs of Oxygen due to slow respiration/inhalation etc,due to Stress/ anxiety /tiredness , It's temporary Defeciency of oxygen for sometime,It also body's defence mechanism, natural warning to maintain,Drop Anu tail in nostrils daily,Cap Urtiplex Charak 2 bid,Kesari jivan 1 tsf bid with turmeric milk,Tab Triphala Himalaya 3 tabs at night for 3 days with Lukewarm water, Sitopaladi Churna 1 tsf bid with Honey
Health Tips
Avoid sour curd Kadi spicy food cold drinks etc if so