Write an article based on this "Try tensing your stomach muscles. Practice blowing balloons. Try playing wind instruments like woodwind or brass instruments."
Lie down on the floor or bed with a pillow under your head or knee. Now place your right hand under your ribcage and your left hand on top of your ribcage.  Inhale through your nose slowly and try puffing your stomach. Tense your stomach muscles and exhale slowly through your mouth. Three or four daily sessions of this exercise for up to 10 minutes is beneficial for lung function. Blowing balloons is a good activity for increasing lung capacity, as it forces the lungs to pump more air, exercising the and making them stronger. Playing these kinds of instruments will help you to control your breathing and expand your lung capacity. If you don't want to play an instrument, you could also try singing lessons, as singing has been proven to increase lung capacity.