Why do I talk in my sleep?

During REM the body processes the events of the day and stage 2 the body moves to process it too. Therefore you sleep as a result of your brain sorting through things!

Sleep talking, also known as somniloquy, may occur during both the REM (rapid eye movement) and non-REM sleep phases. When it happens during REM sleep — the stage during which we dream — it's caused by "motor breakthrough" of dream speech: One's mouth and vocal cords, usually inactive when we're sleeping, briefly get switched on, and words spoken by one's character in a dream are spoken out loud. It's not a mental disorder and shouldn't be something to be worried about! :D Cheers

Talking in your sleep is relatively common, people in my family do - it sometimes is just a release of stress built up, and in your dream you could be reliving your day and looking how to improve it for tomorrow? There are many reasons for talking in sleep :)

Sleep talk is quite usual behavior and is not usually an indication of any serious mental health issues.

Because of being caught up in some very vivid dream (more often than not). Although I think it can also be caused by stress, lack of proper rest and piece of mind.

I find that when my dreams are particularly vivid or distressing my sister will tell me that I'd been talking in my sleep. She'll usually report that I said things like, "wow," "hi there," "no way man," "that's hilarious," or even "get me out of here." This usually happens monthly.

I (think I) have talked in my sleep in the past (in a half-sleep/half-awake state). I believe this happened because my dreams seemed very realistic to me while being half-awoken.

Its one of those special things people do. Its what makes us unique individuals. Maybe its because we are thinking about something so much, we actually talk. Its a mystery given upon us.

The best thing to do would be speaking to your doctor about it, or research it online. That way you can get a medical reason!

Talking in sleep is not as uncommon as you think. Perhaps, stress could trigger it but, its certainly not abnormal in most cases.