Final answer:
Positive stress conducive to personal growth and optimal performance is known as eustress, while excessive stress that is harmful is called distress.
Step-by-step explanation:
Positive stress that presents the opportunity for personal growth is known as eustress. This type of stress is associated with positive feelings and can lead to optimal health and performance. The occurrence of eustress is when a moderate amount of stress acts as a beneficial force in challenging situations, such as the stress an athlete may feel before a game or the stress a student may experience before a major exam. On the contrary, excessive and debilitating stress is known as distress, which can lead to exhaustion, fatigue, and a decrease in performance and health.