Excellence requires perseverance and the willpower to pursue your aspirations. There is plenty of evidence that sleep, food and fitness directly affect your willpower, and the right investments in these can steadily boost your stamina to chase your dreams, and keep you from getting side-tracked by the numerous distractions that are constantly present around us. If you are trying to excel in an area that requires physical effort, such as sport, the need for a healthy body is obvious. But even for a busy professional, a businessperson or a teacher, a healthy body leads to higher productivity.
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