Huge jump in the scale!! HELP
 

Ok, so I have been on SBD with restricted calories, around 1400 a day. I know that is low for my weight, but it works for me, and I am not going hungry. Last week was a rough one, I was in the AZ heat a lot, had no where near enough water, ate some simple carbs, had lots of beef jerky due to not having a place to store my usual lunch, and drank more diet soda than usual. I most certainly did not eat enough calories to gain even a pound, but the scale has jumped up 4 pounds! I drank a ton of water the last two days, knowing I need to flush some out. Did I gain due to having carbs?? Or is this just water?? (I usually get my carbs from vegetables but last week was a weird one, I was working in a bare bones facility) I cheated Sunday, but I know I had no more calories than my resting body should burn. Sigh. I may have really messed up here.

Let me have it ladies..

beef jerky has a TON of sodium... it's not cooked meat, it's just dried beef, and they add tons of salt as a preservative. It's likely a LOT of sodium (esp. with the diet soda you mentioned)

Thats what I thought, I sincerely hope that this is just water and that a few good sweat sessions will help me out. I was also just reading that adding carbs back in will cause a jump in the scale. But not a fat gain. Interesting.