You know that queasy, uneasy feeling you get before a test? That's a nervous feeling. Everyone gets nervous sometimes.
Being nervous is a major part of life that everyone has to deal with at times. Some people are more nervous than others, but we all get nervous about certain things — for example, having to perform in front of a crowd makes most people nervous. Getting interviewed for a job is a nervous experience. When the stock market keeps going up or down, you could say it's a nervous stock market. Nervous also applies to the body's nervous system, which includes your brain, spinal cord, and the nerves throughout your body. If you think you injured your nervous system, that's a good reason to be nervous.