Hey beautiful days,
So I hate to be that guy... but I'm gonna be that guy.
The intent behind weight loss challenges is noble enough but they're horribly misconstrued and end up being counterproductive to long term health, well being, not to mention weight loss. Crash diets are simply not sustainable.
Your motivation's money. Fair enough, I too am motivated by a thousand dollars. But what's going to happen after five weeks when that motivation is no longer there? Keep in mind that you've been depriving yourself for five whole weeks.
Say you win. You're going to want to celebrate right? Maybe invite some friends to a restaurant? Maybe throw a party with all sorts of tasty treats? You see where this is going.
Say you lose. All that hard work and dieting was for naught ;( Well now you fell like s*** physically, mentally and emotionally. You need a way to soothe yourself. You weight your options. Eating's always worked before. You know you shouldn't but then again you know that your crash diet wasn't healthy to begin with and you really need to eat and since $1000 is no longer at stake...
So the best way to win the contest, the way that's the worst for your health, the way that will slow down your metabolism, and the way that I do not recommend is: don't eat. Google tells me that liposuction is about 4 grand so that's out.
Maybe you could get them to award the grand based on body fat percentage. Or most miles walked. Something more akin to a fitness challenge.
Or better yet, have the three biggest losers after 5wks go on to the finals. During the finals you get weighed once every 2wks for 10wks. The person who bests maintains their weight loss (no extra points for more weight loss) wins. If it's too close to call then the top 2 split the money.
I actually like that last idea so much I'm gonna give myself a dancing carrot.
If they're truly interested in long term health they'll at least consider that idea.
Otherwise
rock meet hard place.
Hopefully they can be convinced.
Good Luck