Final answer:
Stress can have both positive and negative effects. A little stress before a test or performance can help improve concentration, but excessive and prolonged stress is harmful. Managing stress involves techniques like deep breathing, prioritizing activities, and taking care of physical health.
Step-by-step explanation:
Stress can be both positive and negative. In the short-term, a little bit of stress can help you concentrate and perform better in activities like tests and performances. However, excessive and prolonged stress can be harmful to the body and impact performance negatively. It is important to manage stress by practicing techniques like deep breathing, prioritizing activities, and taking care of your physical health through proper sleep, exercise, and nutrition.