I weigh myself twice a day, once at night before I go to bed and once in the morning. I like to see the 2 or 3 pounds I drop while I'm asleep everynight, to bad I gain them right back during the day. Weigh yourself as often as you like as long as you dont get upset about day to day swings. I also only have one "official" weigh in on Sunday morning, helps to keep me from straying on Sat night (greatest temptation for carby foods) knowing that weigh in is in the morning.