1. How does your vital capacity compare to others in the class? Describe some reasons why you think your vital capacity is what it is. Why are the highest and lowest vital capacities the way they are?
When comparing my vital capacity to others in the class, my vital capacity was farely lower. For example, Ashpreet and Brianna both received a 2.4 where as I received a 1.6. I think one's vital capacity depends on physical activity, sex, weight, and height. I think that the lowest and highest capacities are the way that they are because of the height. For example my vital capacity was very low especially compared to Monica who received a 3.2.
2. How much air is in a usual breath? Why are our breaths the volume that they are?
There is 500mL of air in a usual breath. Our breaths are the volume that they are due to healthy lungs.
3. How is the mechanism of exhaling forcefully different than a usual exhalation? Why would practice at this via exercise/instrument playing/singing make you better at it?
The mechanism of exhaling forcefully is different than a usual exhalation because you are putting more pressure on your lungs to exhale than you normally would. Practicing through exercise, playing instruments, or singing can make you better at it because all these activities involve heavy breathing and exahling for long periods of time.
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