Stamina refers to the ability to sustain prolonged physical or mental effort. In other words, it's about how long you can keep going while maintaining peak performance. Stamina is crucial for athletes, workers, students - basically anyone who needs energy and focus to achieve goals over an extended period. When it comes to sports, stamina enables athletes to continue exerting themselves during training and competition without slowing down or burning out prematurely. For instance, marathon runners need incredible stamina to complete 26.2 miles. Lack of stamina would cause them to tire out mid-race, unable to push themselves to the finish line. Stamina depends on several bodily factors working together efficiently, including: