Final answer:
It is true that high stress levels and fatigue can impair driving abilities, making it unsafe to drive when experiencing such states of mind or tiredness.
Step-by-step explanation:
It is true that people should not drive if they are experiencing a high stress level, emotional state, or level of fatigue. As stress increases, there is a point where it enhances performance (eustress), but beyond this optimal level, stress becomes detrimental (distress), leading to fatigue and decreased performance. High stress or fatigue can impair a driver's ability to concentrate, react, and make decisions on the road, thereby increasing the chance of accidents. This is supported by the principle that excessive stress can lead to cardiovascular problems and affects our general well-being and ability to perform tasks effectively.