The sympathetic nervous system, which helps your heart and other vital organs function all the time, increases activity in response to danger or stress, preparing the body for extra demands. Stress is ...

With their quick-change camouflage and high level of intelligence, it’s not surprising that the public and scientific experts alike are fascinated by octopuses. Their abilities to recognize faces, ...

We are born with a biological survival system that is designed to respond to any environmental or psychological threat presented to us. Our nervous system is constantly processing information and ...