The second thing that you're going to want to do is take your hand and you can pat your chest or tap your chest, or you can put your hand into a fist and lightly pound on your chest. So you're just going to pat your chest or tap your chest, and that will also activate the vagus nerve and immediately calm your nervous system. The third thing that you can do is hum. Humming to yourself will also activate the vagus nerve and calm you down