If you listen, really listen, you can hear the heartbeats of the people at the table with you. Ignore their chatter, the tines of forks dragged across plates, the ice ramming to the sides of tumblers. Sink down under those sounds until the regular thump thump surrounds you.
You might have to exhale by now.
And then, when the murmurs of their blood rushing in and out and then to the tips of their fingers and back, when those swirl around like fish at a reef, if you really listen, harder this time, even, you can probably hear their thoughts.