Being rude and grumpy a) tilts everyone else, b) everybody's cortisol levels to up, c) cortisol stress impairs cognition especially problem solving and interper

Being rude and grumpy a) tilts everyone else, b) everybody's cortisol levels to up, c) cortisol stress impairs cognition especially problem solving and interpersonal skills, d) thus INCREASING the risk of mistakes and accidents. Modern psychology, more professionals should keep updated about it.