When it comes to the amount of food you can eat without putting on too many extra pounds, everyone is different.

Some people seem to be able to shovel any amount of food into their mouths and stay skinny while others can't even have an extra snack during the week without adding to those pesky love handles. Let's just say that everyone's journey with their weight is different.

You might have a feeling that you are gaining WAY too much weight for the amount you are eating because you know your own body. One 20-year-old woman from Aberdeen, Scotland recently had this feeling and starting getting suspicious. In three university terms, she went from a size 10 to 16 for no apparent reason.

She started doing some investigating and discovered an incredible reason for her weight gain that you won't believe. The source of her problem is actually one that many people experience difficulties with.

Here is Kate Archibald, a young university student who just couldn't figure out how she was gaining so much weight.

Her roommates started getting mad at her because all of the food in the fridge seemed to be missing. She had no idea why they thought it was her. She insisted that she had nothing to do with it.

One morning she randomly woke up next to a bunch of chocolate wrappers and started to realize...

She had been sleepwalking during the night and eating enormous amounts of sweets, cheeses, and even peanuts (she's allergic to them!).

Here is an additional piece of evidence of her nightly binges: an unfinished piece of cheese.

While this condition is particularly rare, sleep disorders themselves are extremely common and can contribute to a lot of interesting night-time behaviors.

One interesting problem that people have is sleep-talking. Luckily for Kate and her roommates, she wasn't sleep talking AND eating.

As with many sleep disorders, anxiety in one's life and even depression can carry over and mess up someone's sleep.

'When I was at boarding school, we had our tuck box at the bottom of our beds, and I would wake up when the medication wore off and feel ravenous, so I'd eat as much as I could.