If you can?t fit in your full exercise routine, squeezing in a mini workout that burns just 100 calories can help counter those holiday cookies and cocktails.

Many women recoil at the thought of baring their arms in sleeveless dresses or blouses, but not Michelle Obama ? half of the fabulously fit new first couple.

Psychologists say our ?self talk? or ?internal dialogue? can make or break a fitness routine. The problem is that many people simply aren?t aware of how destructive their thoughts are.

Insults aside, this is a tale of an unlikely friendship that saved a life. It kept a boss from giving up  on a man he considered not only a business investment, but a personal challenge.

Running a marathon puts severe and sometimes dangerous stress on your body. Why do so many people still want to do it?

New research from Harvard Medical School and the University of California-San Diego suggests that happiness is influenced not only by the people you know, but by the people they know.

A new study hints at a possible link between poor mental health and the odds of having asthma.

CDC: Under new, less strict exercise guidelines, 2/3 of Americans are "physically active" -- but only half of Americans would have met the older exercise guideline.

Couples who have unused and unwanted frozen embryos as a result of infertility treatment often feel conflicted about what to do with them, with disposal and donation frequently seen as unacceptable options.