Insomnia may have been torturing humanity since ancient times, but over the last 20 years scientists have made progress in ...

A study of more than 11,000 teens finds cannabis use tied to slower gains in memory, focus and thinking speed as well as ...

People might not associate brain fog and fatigue with spring allergies, but these symptoms can make life just as miserable—or ...

Always fighting lethargy? A physician explains what habits might be to blame, and what you can do to ensure that you’re not ...

A New York City police officer on horseback nabbed a suspected purse snatcher after chasing her through the streets of ...