Most likely that is water-weight lost due to sweat. It’s fairly common after a workout or sporting event. If anything, it is a reminder to continue to hydrate and replace lost fluids. Just drink water during, and following your workouts and you will be fine. You just have to maintain proper hydration levels consistently.
Water, it is vital to proper nutrition. Consider this: the average human body contains roughly 10 gallons of water at any given time. It is recommended at least 48 fluid ounces of water per day is needed to replace the water lost through the daily routine in sweat, urination, and breathing.
Other sources go as far as to recommend the amount of water needed per day is equal to half your body weight in fluid ounces. In other words, if you weigh 150 pounds, you should drink 75 fluid ounces of water daily. Dehydration has been shown to impair physiologic function and performance values during exercise. Water is necessary for proper nutrient absorption and adequate water levels allow for nutrients and minerals to cross cell membranes more easily.
Water is a chief component of blood, and each cell in our bodies is suspended in a watery solution. Water can absorb and transfer heat within and out of the body. Water is also needed to carry waste materials through the kidneys to be excreted.
Dehydration is not just being stranded in the desert looking for the next oasis to grab a drink, barely clinging to life. Mild dehydration can slow your metabolism and potentially cause you to put on extra weight. On the other hand, proper hydration has been linked to significant loss of body fat and body weight. One study followed 311 premenopausal women ranging from 25-50 years old, randomly assigned to a weight-loss diet.
Researchers found that women who drank 4 cups of water a day (which is half the recommended amount) lost an additionally five pounds compared to those who did not.
Additionally, if you are drinking water more frequently, you will confuse hunger and thirst less often, mitigating the chances of overeating. If you drink water before every meal, it will help you stay hydrated and eat less during meals if overeating is an issue. Staying hydrated will help increase energy levels, so it can help you get through those tough days at work or those tough exercise routines as well.
Hope this helps!