My husband can get get very stressed in his job to the point where he can get into arguments with people. He has a very successful business in the entertainment industry. He deals with many different layers of clients, agencies etc when working on a project. When he arrives home after an extremely stressful day, he appears overly elated, almost like he is tipsy from drinking alcohol. He swears he had nothing to drink or perhaps at the most only 1 drink. What is the cause of his over the top giddiness? It is adrenaline?