Ok cool, that sounds reasonable.It really isn't. The biggest thing is seeing the scale go down and people will freak out thinking they're losing size. Honestly it's mainly just bloat that you lose at first from depleting glycogen stores. So like @malfeasance said. Measure your waist and arms. If you're losing around an 1/8" on your arms for every inch on your waist, that's perfectly normal. If you're losing weight say roughly 10lbs and your waist doesn't shrink an inch, then something is probably goofy.