According to this video inhaling helium gas doesn't just change your voice, it gives you the ability to fly too. By using helium and chewing gums only, these four guys was able to fly by exhaling the helium inside their lungs into the chewing gum.
Do you think it's real ?
It's fun but I don't recommend you to try it.
Do you think it's real ?
It's fun but I don't recommend you to try it.