For women, a significant sign of exercising too much is the loss of a regular menstrual cycle. “The menstrual cycle changes ...

Scientists tracked 14 elite endurance athletes for a year and found a metabolic ceiling: no one sustained more than 2.5× ...

I'm sharing my honest thoughts on the current state of fitness advice online, especially on TikTok. It seems like everything ...

Elite athletes who have run a mile in less than 4 minutes tend to live longer than the general population, according to a retrospective study. The study adds to a growing field of research ...

Extreme heat makes it especially hard for your body to cool down, so you need to be extra careful if you exercise or play sports when it’s baking outside. CDC stops recommending COVID-19 shots for all ...

Extreme heat makes it especially hard for your body to cool down, so you need to be extra careful if you exercise or play sports when it’s baking outside. Your brain tries to keep your body within a ...

One night in 2022, Joe DeMarco went to the small gym in the back of his chiropractic office in Manchester-by-the-Sea, closed the door, turned out the lights, and spent the next seven hours alone, ...

The concept of ‘heartbeat consumption’ is introduced as a valuable metric that provides insights into the possible adverse ...

Exercise raises total energy use instead of saving energy elsewhere. Every move counts as the body keeps burning even at rest ...

Those who have been reading my column since the 1970s know my philosophy of exercise has changed quite a bit. When these issues come up in conversation, I’m often asked about the changes and why I ...