Podcast 03 - Secrets of the Face
3) If someone touches or itches their nose, they might be feeling angry (18:22). The biological explanation for this is that when someone is angry, they begin to breathe more heavily and therefore need more air to take action (17:50). The nostrils flare and expand in order to breathe in more air, and so blood suddenly flows to the nose (16:59). (24:44).