See how your body changes when you stop working out. Learn what happens to fitness, metabolism, and mental health over time.

With a new fitness routine, you may hope to see results almost immediately. Yet progress can seem to take forever. Experts ...

When most people think about how exercise transforms the body, they focus on the visible changes, increased muscle definition, reduced fat stores, and improved posture. But beneath the surface ...

Space changes the human body in many ways. From bone loss to bloated faces, here's how microgravity and radiation affect the ...

Learn how regular exercise improves memory, and enhances focus — plus the science behind how physical activity supports ...

Even with weight loss medications like Ozempic, people still need to eat nutritious foods and partake in physical activity, says columnist Carrie Dennett.

Here’s how to exercise safely at each stage of life, from your teens to postmenopause. Regardless of age, it’s important for women to appreciate the complexity of the hormonal changes they ...

Exercise has long been recognized by clinicians, scientists and public health officials as an important way to maintain health throughout a person’s lifespan. It improves overall fitness, helps build ...