Mood repair strategies alleviate undesirable moods by participants that focus on engaging this euphoria. Exercise can also serve to distract individuals by allowing their focus to be on a specific task, such as focusing on lifting weights, or getting across the finish line, allowing less room for rumination on negative thoughts. Stress Management activities are used for mood repair strategies and the stress that is typically accompanied by them. By coping with stress through a variety of techniques individuals are able to learn how to manage their day-to-day lives and the stimuli that can be known to cause stress. Sex is a form
Combat stress reaction Historian Terry Copp has written extensively on the subject. In Normandy, "The infantry units engaged in the battle also experienced a rapid rise in the number of battle exhaustion cases with several hundred men evacuated due to the stress of combat. Regimental Medical Officers were learning that neither elaborate selection methods nor extensive training could prevent a considerable number of combat soldiers from breaking down." In his history of the pre-Nazi Freikorps paramilitary organizations, "Vanguard of Nazism", historian Robert G. L. Waite describes some of the emotional effects of World War I on German troops, and refers to a phrase