Since helium is lighter than air then you could fly faster in helium.
Why your voice is more high-pitched in
Helium. So when you talk when inhaling
helium since helium is lighter than air
then the sound waves of your voice get
received faster and if you talk fast it sounds more high-pitched.
Yes it does, We would be running as fast as flash if air has no weight because the air is easy to run through because it has no weight.
Things Fly when they take advantage of properties of air
Yes it does