Calories

[rd14962]

How many calories do I need to burn to lose one poound of fat?

[Scarlett]

You have a reduce your intake by 3500 calories, or burn the equivalent, to lose 1lb.

http://www.caloriecontrol.org/exercalc.html

This is fun too.

[pagey]

So if I don't eat for a week, I should lose about 5 pounds?

[Scarlett]

No you will lose more than 5 pounds - mostly in water.

[ann_h]

However if you dont eat for a week you will send your body into emergency mode, which means you will crave fat like loony, and your metabolism will slow right down. This is why yo-yo diets (crash diets) dont work
In addition, you will lose important vitamins and minerals and muscle mass. Starving longer term and burning off more muscle leads to high levels of toxic by-products in your body. Not good.