Breaking up your fitness routine is hard to do. But it's crucial for avoiding the bigger heartache of overuse injury, fitness experts say.

Burnout is sneaky ? it doesn't happen overnight ? but the stages have classic signs. Clueing in to them can help you sidestep a workout slump.

People who complain they have no time to exercise may soon need another excuse.

Experts worry that "The Biggest Loser" focuses too heavily on competitive weight loss ? a focus that is at best, counterproductive and, at worst, dangerous.

The country's top coaches and Olympians share their training secrets for building extreme strength, speed, endurance, and agility that can give you a gold-medal edge in your own life.

Overweight people may want to vacation in the mountains rather than at the beach ? and not just to avoid putting on a swimsuit.  A new study finds obese people lose weight at high altitudes.

Horrified by headlines about the connection between a sedentary lifestyle and serious health issues, our writer tests a tiny exercise bike she can use while she works.

Going to the gym in January is like going to the mall on Black Friday, to the bar on New Year?s Eve: It?s amateur hour. And, as they say, sometimes what you don?t know can hurt you. Or at least really, really embarrass you.

America?s rapid rise in obesity appears to have leveled off. But there's little reason to cheer. Most of us are already overweight. Has society simply reached a maximum level of tubbiness?

If you?re trying to motivate yourself to get moving in the new year, here?s some inspiration: Mounting research shows that exercise isn?t just good for the body, it?s also good for the brain.

The fight against fat is going high-tech. To get an inside look at eating and exercise habits, scientists are developing wearable wireless sensors to monitor overweight and obese people as they go about their daily lives.

Flipping the switch and making a lifestyle change is the easy part. Look at any health club in January, after all, and you'll see plenty of new faces. The hard part is what comes next.

Forget the deprivation diet and marathon workouts. New research shows that taking baby steps ? not giant leaps ? is the best way to get lasting results.

In the season 9 premiere of ?The Biggest Loser,? contestants got moving with their first challenge ? to ride stationary bikes for 26.2 miles. In the end, five players were sent home while the two top ?Losers? shed a combined 57 pounds.

When you?re sweating through an intense workout, you probably reach for a sports drink to  rehydrate your body.  But which beverage is right for you?

Studies have concluded that exercise can enhance the immune system, but is the effect great enough to stave off swine flu?

Is it true that exercising will eventually wear out your joints, heart or any other body parts? Should you wait after working out before showering? Smart Fitness answers your queries.