Shay, I think your question answered it for me. I had read this thread (several times in fact), and just didn't get why people were already posting anything, even formats, when the weigh-in isn't for another week.
However, you also said that since I'm a Monday weigh-in, I would weigh in today. That's my new source of confusion. Since the first weigh-in period is 1/13 to 1/19, wouldn't I weigh-in after 1/19, meaning next Mon 1/21? That still puts me on track for the deadline. Otherwise, I'm counting last week when the challenge hadn't yet started.
I swear I've read everything - am just getting confused by some of the posts