... the way people react to and cope withstress, because fit people cope better with the demands of stress whencompared with those who are in poor physical condition. Exerciseimproves the performance ... circulatory, endocrine and digestive systems. The heart and lungs work better and are able topump more oxygen around the body. This increases cardiovascularcapacity and strength, and also reduces ... (Nader, 2003). A few people, like AlbertPERSONAL PERFORMANCE AND STRESS MANAGEMENT83Einstein and Winston Churchill, survived on as little as four hours anight but, for most people, six to seven...