Stuttering without being anxious?

Stuttering without being anxious? I've had an inconsistent stutter that just abruptly started a few years ago at this point and I'm moreso just curious to what it is. Like I'm not nervous or embarrassed about it or anything to that effect, but just randomly I will just botch sentences left and right. Maybe this is a normal thing, but nobody I know does it nearly as often as I do. I doubt it's anything that interesting but I was just curious what it is.