FITNESS

Doctors encourage physical activity after knee replacement surgery. But it might mean adapting your workouts in ways that lessen the impact on your knees.

Adding simple workouts to treatment improved recovery from a variety of substance-use disorders, including to cocaine, opioids, cannabis and alcohol.

Acclimating to hot weather is a good idea for anyone who wants to reduce risk of heat illness during their outdoor workout. A hot bath can help.

Moving your workout outside can be a simple way to magnify its benefits, not only for thinking, but health, happiness, fitness, and motivation

The Boston Marathon is the latest major running event to create a nonbinary division.

New findings from 350,000 people make the strongest case yet that exercise improves cognition. A small study shows it raises BDNF, a brain chemical.

Regular social exercise may counter physical inactivity and low social participation, both of which contribute to worldwide dementias, research findings suggest.

In her new book, Goucher writes in detail about her past trauma and how she learned to love running again.

A new study shows that a negative mind-set — such as feeling like you’re failing at exercise — is bad for your health.

Ultramarathons favor those with steady pacing and consistent training, which helps explain why so many later-in-life runners pick up the sport.

For people struggling with depression, the findings show you don’t have to run marathons or otherwise train strenuously to benefit.

A review of studies by Brigham and Women’s Hospital found that yoga improves health indicators linked to reduced frailty, including walking speed and endurance.

From professional athletes to weekend warriors, athlete burnout can take the joy out of physical activity and sport.

The microbiomes of physically active people can be quite different from those of people who rarely exercise.

The game is called the “run until” challenge. The trick is: You can’t stop until you find whatever the challenge requires.

A new study of 30 million people found that even small amounts of exercise could lower risk for heart disease, certain cancers and early death.

During a competitive game, the brain might not be able to correct a faulty knee or ankle position in the milliseconds it takes to tear a ligament.

A new study collected from more than 90,000 people found afternoon exercisers lived longer, but other research suggests morning exercise might burn more body fat.