Eating/sleeping Problem.

[Eliza]

Do you smoke before going to sleep? usually that is one thing that would keep you up.
As for drinking, that's odd, puts me to sleep all the time and I am a harsh insomniac.
Like it was mentioned metabolism could be the issue here. Some could eat a little and gain a lot of weight, some need to eat a lot just to maintain theirs.

 

[dark idiot]

The Nicotine in your ciggs is a stimulant which could keep you awake all night, especially if your smoking 35-40 a day. Also Nicotine is an appetite suppresant