Undoing Effect of Positive Emotions

The claim that subjectively pleasant, positive emotions undo or resets the cardiovascular aftereffects of unpleasant, negative emotions.

Reference:

Fredrickson, B. L., Mancuso, R. A., Branigan, C., & Tugade, M. M. (2000). The undoing effect of positive emotions. Motivation and Emotion, 24, 237-258. https://doi.org/10.1023/A:1010796329158