many variables: daily consumption of food; how much muscles mass one has; how many calories burned daily to create a caloric deficit; what kinds of foods eaten throughout the day to work with one's endocrine system, etc, etc, etc
if you lost 4 pounds each week and you wanted to lose 40 than you would have to do that for 10 weeks.
You cannot lose 40 pounds in one day by any natural means.
You cannot lose 40 pounds of body fat in one week by any natural means. .
it will take around 20 weeks at 2 pound a week which is the remented amount to lose a week , however at the start of a diet you will must likely lose 5 pound which will be most water weight so around 18.5 weeks to lose 40 pounds
Sorry- there is no way to lose 40 pounds in one week that would not kill you. A weight loss diet will typically reduce weight by about 2 pounds a week. Even if you ate NOTHING for a week you would not lose 40 pounds.
There's no way to lose that much weight that quickly. It took you a long time to get overweight and it's going to take a long time to get thin again. Just do safe exercises and eat less and you'll get there.
It depends on hpw dedicated you are. If you diet and exercise I would say at least 7 months possibly longer. It may not take as long if you are extremely over wieght.
Have a leg off.
No. It took you quite a while to put that weight on. It will take a while to take it off.
It is not advisable to lose 40 pounds in only 17 days. You can lose weight fairly quickly by exercising at least 30 minutes per day and eating healthy foods.
Surgery or serious illness.
don't stop moving. Honestly, you shouldn't need to lose 40 pounds, but dance, sing, run, walk, play MOVE basically.