In an article about causes of vocal damage, the author lists the use of mouth vowels instead of throat vowels as one of the causes of vocal damage.
Would anyone be able top explain the difference between the two, & what would be the reason that mouth vowels are damaging?
article link: https://voiceteacher.com/damaging.html#:~:text=Use%20of%20mouth%20vowels%20instead%20of%20pharyngeal%20vowels