A model in workout clothes rests on a table in Amsterdam, the Netherlands, on Nov. 24, 2022. Rest days shouldn’t mean being completely...

Dr. Jonathan Tward, a radiation oncologist, in Salt Lake City on July 3, 2024. Tward says he feels that he is often on the losing side of...

By Caroline Hopkins Sunshine seems to make a strong case against daily sunscreen. When we step outside on a clear day, the sun’s...

By Caroline Hopkins Q: Humidity makes me tired, short-tempered and nauseous. Why don’t I feel this way in drier heat? And how can I stay...

By Siobhan Roberts In 2018 an international team of scientists — from labs in Houston; Copenhagen, Denmark; Barcelona, Spain; and beyond...

By Noah Weiland On a recent Friday in Albuquerque, New Mexico, as triple-digit temperatures stretched into the evening, a 69-year-old man...

By Alice Callahan In 1970, two Danish researchers traveled to Greenland to investigate a nutritional paradox: The Inuit people living in...

By Erik Vance The sun is out, the days are long and it feels like everyone is outside exercising. Building a fitness habit requires...