Overview. your lung capacity is the total amount of air that your lungs can hold. over time, our lung capacity and lung function typically decrease slowly as we age after our mid-20s. Follow these 8 tips and you can improve your lung health and keep these vital organs going strong for life: 1. diaphragmatic breathing. among the many things you can do to keep your lungs functioning properly are some simple breathing techniques, according to keith roberts, rrt, cpft, director of respiratory therapy at rush. to know that your body is strong our lungs and heart are the true source of power—keep them strong and they’ll serve as critical engines for a healthy metabolism back ready to breathe deep ? resting pulse push-ups ever feel dizzy standing from a seated position ? yes no how long can you hold your breath ? sit in a chair and relax take two Holding your breath can save your life and may have other physiological benefits. here's how to train to do it safely, as well as what you nee...