<human>: Can you condense the text into a few key points?

Ok. So last Tuesday, I went on vacation. Literally didn't do anything. Stayed home, watched movies, and for 5 days I didn't do anything but eat yakisoba (ramen) and chocolate ice cream. As far as beverages go, I drank water and iced tea. (A little milk here and there). Exercise was normal/below normal. Sleep was... Well, I got lots of that. 
I got on the scale today, (I weigh myself once a week) and I've lost about 10lbs. I absolutely trust this scale and my weight never ever varies by more than a pound or two. 
Now, without harassing me for eating shit for a week, can anyone offer any explanation as to why I lost 10 pounds??? (I'm not complaining! Just confused...)
<bot>: after a week of eating ramen and ice cream, and getting normal to less than normal activity, I've lost 10 pounds. I'm curious as to why.