I am 5'7 now, and before i went on a diet, i was 162 and chubby. I am now about 129 and need to gain muscle weight back. For the last 2 weeks i have been eating alot, having 3 low carb isopure protein shakes a day, and doing heavy compound excercises at the gym like squats, bench and deadlifts. I stepped on the scale and i was 128, which means i lost a pound. I do no more cardio right now, so how is this possible?