While it is possible to lose water weight safely during an overnight sleep, the amount of actual weight lost is much less than five pounds. According to nutritional experts, the average person loses up to two pounds of water weight each night. Most of this water is eliminated through sweating. In addition, while asleep, every time a person exhales a little water escapes out of the mouth.
Rapid weight loss diets are very popular, but nutritional experts caution that they can be misleading. While there is some evidence that getting less sleep may lead to poor eating choices, weight loss is about making smart nutritional choices. Learning portion control, eating a well-balanced diet and exercising are still the best methods to achieve success.
Choosing to follow any rapid weight loss diet for a prolonged period of time can pose a risk to health. Some of the common problems experienced during these diets are headaches, dizziness, constipation, fatigue, irritability, muscle loss and hair loss. According to WebMD, there are more serious health risks that can occur as a result of trying to lose weight fast. These include dangerous electrolyte imbalances, painful gallstones, dehydration and malnutrition. In addition to health risks, many people regain the weight they have lost because these diets are hard to sustain.