Unwanted weight loss
To gain weight all you have to do is make sure to consume more calories than you burn. But just because you weigh 1 lb less according to the scale doesn't mean you have lost 1lb of body mass. Scale's are not 100% accurate and the scale error rate can certainly explain a 1lb weight loss. Also, your body's weight will fluctuate by several pounds due to water retention throughout the day and month. Cathe has a lot of articles on weight loss and weight gain in her
Fit Tip section of this website that you might find helpful.