Down 5.5 lbs one week into keto. Would guess most is water weight as of right now. My stomach is definitely flatter and can see some vague outlines of upper abs. Was able to move down another belt loop this morning so that was cool to me. I only have 3.5 lbs left to go to meet my goal, but am planning to be on the diet for another 4 weeks. Not sure what I'm going to do if I hit it early...likely keep going if not clear ab definition.
So far averaging 1400 calories/day. 106g fat, 82g protein, 14g net carbs. Haven't really felt like I've been starving myself at all, which makes sense as the food is more satiating than high carb foods, but i did have some killer snack cravings sunday and yesterday evening. Had to make an emergency run to the grocery store to get some sugar free jello and whipped cream. Its done the job so far. You can make some really good keto friendly snacks, but that requires buying a bunch of shit I don't have in my kitchen, so I'm not sure if I'll end up doing that or not.