A moderate sense of fear maybe considered normal or even healthy. Fear is our defense mechanism. It is a feeling of emotion or awareness of impending danger. Fears maybe in reaction to imagined or real circumstances. They can be acute or chronic.
Fear is natural.
We all have common fears. Some have fear of water, height, certain animals. Some have fear riding a boat or an airplane. Fear maybe just the pounding of the heart, sweating of the palms or shaking of knees. There are many kind of fears.