Vital Capacity


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?

I had the best vital capacity in the class by having a 5L blow. I think my vital capacity is so good because i play a lot of sports so i have to breath a lot so my lungs have become larger. Usually the unfit people will get a lower capacity and the fit people will get a high capacity. Also gender matter because men have a higher average then girls.

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

500ml in a usual breath. because thats how much oxygen our body needs to live.

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?

When we are breathing regular we dont have to use our muscles to breath but when we were trying to see who had more capacity, we had to use our abs to squeeze our lungs so all the air comes out.