Venting may seem cathartic; however, it is unhealthy. It is a pseudo-solution that may appear to work, but did it solve the actual problem or handle the situation? Or is it temporary relief until the same thing happens again?
People tend to vent about their thoughts/feelings to avoid how they think and feel. Also, if anger is physically expressed as a way to cope with it (e.g., rage rooms or punching bags), then it increases arousal levels and ends up being counterproductive.
Increasing your arousal level – aka up regulation of emotions – increases the intensity of the emotion and heightens physiological arousal (e.g., increased HR, faster breathing, heightened alertness, muscle tension, restlessness, and release of stress hormones). Instead, reduce your arousal level. Reducing arousal – aka down regulating – reduces the emotional intensity and reactivity along with decreasing physiological arousal (e.g., a lower HR, deeper breathing, lower stress hormones, and overall calming and relaxing effect). This can be initiated through mindfulness, deep breathing, and relaxation techniques.