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I have twice woken myself up by talking too loudly in my sleep. It sounds ridiculous, I know. But, what's more ridiculous is the time I heard my sister singing the Australian national anthem in her sleep!
Yes.
To the point I have woken myself up!
I love it when I am laughing in my sleep, because it really has to be very funny
what ever it is..... I am dreaming about.
When I'm stressed I tend to talk more in my sleep. Usually there's nothing coherent, and my partner has told me that I've said some pretty strange things.
It's worth keeping an eye on though. If you're talking more during a certain period it may reflect some problems or issues that you're having.