Which of the following is NOT one of the danger signs of overexertion?

The correct choice is that thirst is not recognized as one of the danger signs of overexertion. While thirst can indicate a need for hydration, it does not necessarily signal a serious physical response to exercise or overexertion. In contrast, shortness of breath, chest pain, and dizziness are critical warning signs that require immediate attention. They suggest that the body may be under significant stress or experiencing adverse reactions from exercise, which could indicate potential health risks like cardiovascular issues or dehydration to a more serious extent. Recognizing these danger signs is crucial for ensuring safety during physical activity and responding appropriately if they arise.