Interesting (but preliminary-sounding) experiment where explaining to hotel maids how much exercise they were actually getting seemingly causes them to get the effects of exercising.

. . . .Basically, almost every moment of their working lives is spent engaged in some kind of physical activity.

But Langer found that most of these women don't see themselves as physically active. She did a survey and found that 67 percent reported they didn't exercise.

Langer and her team measured the maids' body fat, waist-to-hip ratio, blood pressure, weight and body mass index. They found that all of these indicators matched the maids' perceived amount of exercise, rather than their actual amount of exercise.

The experiment sounds a little bit flawed, but the result is still pretty interesting.