| − | Stress is the emotional and physical tension brought on a person’s reaction to the demands of life. Stress frequently causes anxiety, irritability, and inability to concentrate. Stress can also lead to headaches, and a rapid heartbeat. | + | '''Stress''' is the emotional and physical tension brought on a person’s reaction to the demands of life. Stress frequently causes anxiety, irritability, and inability to concentrate. Stress can also lead to headaches, and a rapid heartbeat. |