I may be short but but i have big lungs!

so we did a vital capacity test in class and it tuned out that i got the second highest in class wich was a 4.1! yeah i can hold lots of air.

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?

-your vital capacity compared to others in class can all vary depending on how we all  exercise our lungs some people are more athletic or some people play intruments.my vital capacity is the way it is because i may be short but i have a big frame compared to other girls in class. the lowest vital and the highest capacity are the way they are because some people have bigger or smaller body frames and it depends on how they exercise thiere lungs.

2. How much air is in a usual breath? Why are our breaths the volume that they are?

-There is 500ml of air in our usal breath we only breath that much in order to conserve our energy.

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?

-Breathing for us is automatic no need to think about it we just do. just like any other muscle in our body if we work it the stronger they will get that is why when people who  exercise or play insruments have stronger lungs they are consitanly working them out.