This article was reviewed by Felix Gussone, MD. Key Takeaways: Your endocrine system regulates many bodily functions, from ...

Your sympathetic nervous system is one of the branches of your autonomic nervous system. It controls functions under unconscious control related to “fight or flight.” Your nervous system plays a ...

Your immune system is your body’s built-in defense network, working nonstop to protect you from bacteria, viruses, and other ...

The endocannabinoid system is found throughout the brain and body and plays a key role in everything from memory and learning to sleep to social behavior. During prolonged aerobic exercise, the body's ...