in all seriousness.. 1lb a day has to be waterweight or something...

1lb = 3500 calories
so unless you're taking a dietpill with ephedra, and working out for 6 hours a day, and eating healthy on top of that... there's no way its fat your losing.

You may notice that you 'gain' it back in time.

you can safely lose 4-5 lbs a week, most will say 1-2 lbs is healthy and realistic though.