Final answer:
Stress can be a positive force called eustress, which is associated with positive feelings, optimal health, and performance. However, when stress becomes chronic and excessive, it can become toxic and harmful.
Step-by-step explanation:
Stress can sometimes be a positive, motivating force that can improve the quality of our lives. This kind of stress, called eustress, is associated with positive feelings, optimal health, and performance. A moderate amount of stress can be beneficial in challenging situations, such as before a major exam or a sports competition. However, when stress becomes excessive and chronic, it can become toxic and harmful, leading to negative consequences for our mental and physical well-being.