yea losing 3lbs isn't that hard at all. It can be easily done in a day. I range from 157-165lbs. our weight actually change everyday, nobody maintains an exact weight for a whole week. I know so cause I have a digital weight scale. Everyday I shower, I curiously look how much i weight that day. I notice if I'm above 162 Im more grumpy but if Im below 162 but above 157 Im in a happy mood.

I sometimes weight myself in the mourning, I could be 165 but then after a hard day at work I could be down to 157lbs. thats 8lbs in less than 24 hours. Ofcourse im tired and hungry and as soon as I have dinner and wake up the next day I could weigh in at 165 again.