The same way as anyone else: you have to create an energy deficit (kcals in < kcals out).
no way lose some weight you could die
No, a girl cannot lose weight by fingering. However, with proper diet and exercise, she will be able to lose her desired weight.
Exercise
Fourteen months. It took Spurlock fourteen months to lose the weight gained from his experiment.
Drink as much water as you can and walk/run.
There are three things you need to do. Exercise, exercise and e xercise.
Lose weight!x
It will depend on your current weight. A person weighing 300 pounds may be able to consume over 2000 calories and still lose significant weight while a person weighing 150 pounds may be limited to 1500 calories/day to lose.
24 pounds
It depend on how much you workout.
That depends on the girl's current weight, her activity level, and how many calories she'll be eating per day. There really isn't one concrete answer. (:
There is no easy or safe way to lose 70 pounds in 3 months. For the average person, it is recommended that they lose no more than 2 pounds per week, which would be 8 pounds per month, and 24 pounds in 3 months. As you can see, 24 pounds is a large difference from the 70 pounds, so don't risk your health trying to lose that much weight in such a short among of time. It took more than months to gain the extra weight, so you can't expect to lose it in just 3 months. But if you follow a sensible diet, as well as exercising on a regular basis, you will lose the weight. The exercise can even be something as simple as walking - you just have to do it on a regular basis. People who do go on crash diets, or use other fast weight loss programs, tend to gain back all the weight they lost, and then some, which results in them weighing even more than they did before the weight loss. If you see an advertisement claiming a product will help you lose that much weight that quickly, don't believe their claims. The ONLY thing you will lose is your money.