सासे गोगो मानसिनाव संफ्लआव बारनि फ्राय ¾ आ गिबि सेकेन्डाव होखारहरजायो आरो 3 सेकेन्डनि गेजेराव बेनि गासैखौबौ बायजोआव होखारहरजायो ।
In a normal person about 3 4 of air in the lungs is expelled in the first second and within 3 seconds all of it is expelled out .