How many pounds will you lose if you don't eat in 3 days?

To prevent excessive muscle mass loss, the body begins to rely on fat stores to create ketones for energy, a process known as ketosis. For the first 5 days without eating, a person can lose 1 to 2 kilograms (2.2 to 4.4 pounds) of body weight each day. It may seem obvious to set realistic weight-loss goals. But do you really know what is realistic? In the long run, it's smart to try to lose 1 to 2 pounds (0.5 to 1 kilogram) a week.

In general, to lose 1 to 2 pounds a week, you need to burn 500 to 1000 more calories than you consume each day, through a low-calorie diet and regular physical activity. Keep in mind that Shapiro doesn't consider fasting for 72 hours as a way to achieve significant weight loss. Losing fat takes longer. However, Fung, an advocate of fasting, disagrees and says he could lose 1.5 pounds of fat in a 72-hour period.

For that reason, it recommends that people with a body mass index (BMI) lower than 20 could be at risk of malnutrition. Actually, doing a 3-day fast with water alone is quite simple. You don't eat food for 3 days and only consume water, salts and electrolytes. But sometimes you want to lose a few pounds quickly, whether it's to meet a weight requirement, feel better in a bikini, or wear the wedding dress of your dreams.

However, whenever you can eat something on Thursday, locking the pantry on Monday could improve brain function, at least according to studies on rodents. While you don't want to put off losing weight indefinitely, you should make sure you're prepared to make permanent changes in your eating and activity habits. One way to reduce your calorie intake is to eat more plant-based foods, fruits, vegetables, and whole grains. While you can lose weight without exercising, regular physical activity plus calorie restriction can help you lose weight.

You release ketone bodies through your breath, and the smell is often unpleasant enough that people you sharply scare away by threatening to skin the next person you find stealing your yogurt to stay away for fear that their noses will melt with the farts in your icy mouth.