The answer is "James-Lange theory".
The James-Lange theory of emotios attests that feelings emerge from physiological excitement. Review what you have found out about the thoughtful sensory system and our battle or flight reaction when undermined. If you somehow managed to experience some danger in your condition, similar to a venomous snake in your garden, your thoughtful sensory system would start huge physiological excitement, which would influence your heart to race and increment your breath rate. As indicated by the James-Lange hypothesis of feeling, you would just experience a sentiment fear after this physiological excitement had occurred. Besides, extraordinary excitement examples would be related with various sentiments.