Eli5 How are you able to still hit notes when you hum and why do you run out of breath more quickly when you hum?

Question

Eli5 How are you able to still hit notes when you hum and why do you run out of breath more quickly when you hum?

In: 3

Answer 1

Your vocal cords are still working when you hum, they make notes just like when you sing. You’re just not letting the air out through your mouth, you’re letting it out through your nose so you can’t change the sound the way you can with lips/tongue/jaw, but you still get the basic vibration.

I don’t really understand the second part of your question. More quickly than when?