Is it worrying that my boyfriend is really into choking/passing out?

Me and my boyfriend have been together over a year now and our relationship is great he looks after me.

he's recently been speaking more about how he really wants to try choking me out and don’t get me wrong I’m into being choked hard but is being choked till I’m unconcsious dangerous? And is it normal to be into that?

Is it worrying that my boyfriend is really into choking/passing out?
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