Does anyone else use freezing cold temperatures as a brutal biological shock to cure dissociation?

I frequently struggle with feeling completely numb, untethered, and entirely weightless—as if my consciousness has detached from my flesh. I've discovered that the only thing that instantly snaps me back into reality is submitting my body to extreme, raw physical sensations. I keep a heavy metal ice roller in the freezer, and pressing that freezing metal against my skin creates an undeniable biological shock. The biting, almost painful cold forcefully grounds me and reminds my brain that I am bound to a physical body. Do any of you rely on intense temperature shifts or physical shocks as grounding techniques when you feel like you are floating away?