My friend and I both gained weight during our first week of the 30DS. I did it 3 days this week, plus did 30 minutes on the exercise bike twice, and went for a couple of walks...and found that I've gained 1.5 pounds. Jillian herself says the whole "muscle weighs more than fat" excuse is B.S., so what's the deal? Anyone else gain weight at first? I need to hear some success stories, or an explanation, so I can resist the urge to quit the whole thing already!