I sleep with my wife and (when she graces us with her presence) our cat. Last night I caught myself syncing my breath to their breaths while sleeping, or half-sleeping considering I was aware of what was happening. Eventually their breathing went out of sync, and my breathing got confused, and after a very brief period of suffocation, I realized that I have no obligation to sync my breath, and took control of my breathing and started breathing normally. It felt strange to me but I googled it and it looks like syncing your breath happens to people. Does it happen to you as well?
PS: I realized while typing, I don’t know if I should be hearing my 3kg cat’s breathing. I should check on that.
I don’t, but it’s fine to hear your cat breathing. It doesn’t necessarily mean there is something wrong with the cat, though, I’m not stopping you from a vets checkup if you think their breathing is too loud.
What surprised me was that you were trying to sync to a cat, that’s not easy. Even when sleeping, cats breathe much faster.