Of late, I have been reading and saying out loud a few tongue twisters in English after picking them up in one of the Facebook shares. While tongue twisters probably exist in all languages ever spoken, I have always considered them as a way of having fun with the language and some lollygagging with your friends. Yet some recent reads{1}{2} that I have done seem to suggest otherwise. That tongue twisters in English can play a big role in improving speech and articulation.
Were tongue twisters in English (also) created for the purpose of speech training?
Can regularly saying tongue twisters aloud help in improving my articulation?
While most articles suggest what a tongue twister is, none of them seems to clearly explain how they came into existence. What is the origin of tongue twisters?
The Wikipedia article on Tongue Twisters doesn't appear to have any support towards this argument (that tongue twisters have serious purposes beyond "for the lulz"!).
References:
{1} - Tongue Twisters as a speech training aid
{2} - In Speech Therapy