Below is an exercise that will help you practice proper breathing technique. Remember that your diaphragm makes your lungs move. That's the muscle that pulls your lungs down, so they expand and circulate oxygen throughout the whole lung.
Lie flat on the floor, with one hand on your belly and one hand on your chest. Lying on the floor at first when you practice is important, because if you stand, you're more likely to fake a deep breath by doing an exaggerated chest extension rather than letting your lungs fill naturally.
Take a deep breath in-slowly. Imagine your lungs filling up with air; it should take about 5 seconds to inhale. As your diaphragm pulls your chest cavity down, your belly button should be moving away from your spine as you fill. Your chest will also widen-and maybe rise ever so slightly-as you inhale.
When your lungs feel fuller than sumo wrestler's lunchbox, exhale slowly-taking about 7 seconds to let all the air out.)
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