Originally posted by The_Chicken_Daddy
Without sounding like a prick here, i must be honest.
One week isn't much to see much difference and as far as i can see, you've basically just dropped a bit of sub-Q water.
At the same time, the sun is causing shadows making your cuts seem more apparent (shadows which would have probably shown up on the first photo depending on the time of day). Coupled with that, your arm is a bit further back on the second photo, causing your delt to stick out a bit more and a larger shadow to be cast, giving the appearance of more size and defintion.
I'd also wager that if you've been doing intensive training in the gym all week, your muscles will be inflammed slightly. That said, it doesn't really look like you're bigger muscular-wise.
You were already very lean to begin with, and i'm not taking any hard work away from you here cause i'm sure you've put a shit-load of effort into it, but judging from the two photos, all i see is water tricks and carb manipulation.