Crash diets sometimes make misleading claims that you can.
•increase workout levels and lose weight.
•intensify workout levels and lose weight
•participate in fitness classes and lose weight. •stop exercising and lose weight

•stop exercising and lose weight

Explanation:

Emergency diets usually take anywhere from 3 to 10 days, and it is not recommended to do any of them for a longer period than this may be harmful to health. They make you lose weight on liquids and are also extremely calorie-restrictive, because they make you believe that you can lose weight efficiently only with diet and without exercise. You will even lose weight with the emergency diet, but you will hardly be able to maintain your lost weight without physical exercise.

Remember that an emergency diet can make you lose 2 to 5 pounds, but anything else is difficult, since as you are restricting your calorie intake so much, your metabolism slows down to preserve your energy. In addition, you will probably regain the weight you have lost once you return to your normal diet.

it is definitely false.