Anger arrives with a rush of energy that feels strong and clear, and that is a large part of why it keeps coming back. The bill turns up hours later, long after the payment.

What the research says

Two weeks of aerobic exercise reduced people's fear of the bodily sensations that come with high arousal, apparently by giving them repeated safe experience of a racing heart and short breath. That trial was about anxiety rather than anger, and it was brief. It does suggest the surge itself can become familiar, which is a different thing from having to act on it.

Strength of evidence: one line of research. A single study, or a theoretical account.