Can you stop a yawn with a finger?
Can you stop a yawn with a finger?  
Podcast: Ask the Naked Scientists
Published On: Fri May 08 2015
Description: The Naked Scientist answered listeners' weird and wonderful questions including: why babies tummies look swollen; why we vomit if others vomit; and how effective are sleeping tablets. Like this podcast? Please help us by supporting the Naked Scientists