People who drink less than a couple of glasses of water each day may be more likely to develop abnormally high blood sugar, a new study suggests.

When someone's blood sugar levels are high, but not high enough to fit the definition of diabetes, doctors often consider that person to have "pre-diabetes" -- which puts them at risk of developing the disease itself.

Weekly yoga classes eased pain and improved functioning in some people with chronic lower back pain -- but the yoga sessions weren't any better than regular stretching classes, according to a new study.      
Researchers found that participants in both types of classes had better functioning and fewer symptoms after three months than back patients who were only given a book with advice on preventing and managing pain.