Human beings can mirror the internal states of others, even at a distance, without conscious awareness or mirror neurons.

“What's remarkable, and this is where interoception really takes a leap into the incredible is that there are beautiful studies that show that for instance, when we know somebody pretty well and they are going through some sort of experience of any kind, our heart rate actually starts to mimic their heart rate. Our breathing starts to mimic their breathing, even if we aren't conscious of their breathing.”