You will likely lose weight on any diet if you eat less than 910 calories a day. But losing 10 pounds in 3 days is both unlikely and unhealthy. To lose just 1 pound of body fat, you need to reduce your daily calories by about 500 a day for a whole week. That's giving up 3,500 calories over the course of 7 days.
It is impossible and dreadful to lose 10 pounds in 2 days, as you need more time to achieve your 10-pound target. It could be a week, several weeks, or even months.
Although it is impossible for you to lose 10 lbs in 10 days, losing weight more slowly and sustainably is, however, achievable. However, you are asked to only start a weight loss program under professional and medical supervision and guidance.
Technically, it is possible to lose 5 pounds in 3 days with so-called “detox” diets. However, it is unhealthy for your body. That is why even if a meal plan seems to be simple and effective, it is important to consult a dietitian to prevent unwanted consequences for your health.
While fasting for 3 days is relatively safe for most people, it can be quite dangerous for some people. These exceptions include (9): Patients with diabetes, as it can lead to dangerous dips and spikes in blood sugar. Pregnant women, new moms, or breastfeeding women.
One 3-day fast is not going to have a significant impact on your weight. You may notice some changes on the scale, but don't mistake these changes for long-term weight loss. Any weight that you lose during a fast is mostly water weight (6). Once you start eating again, you quickly regain this weight.
A 60-minute exercise per day is crucial. Whether it is running for 20 minutes three times a day or an hour on the elliptical machine, your body requires to burn about 1700 calories (more than you consume per day) to lose weight in three days. As many activities as you indulge in, the more calories you will burn.
We recommend losing no more than 1 to 2 pounds per week for sustainable weight loss, which means you could potentially lose 10 pounds in five weeks. However, a more realistic timeline is 10 to 24 weeks, since most people don't have hours to devote to walking every day.
Although it may be possible to lose 1 pound (0.5 kg) per day, it would require you to limit your food intake quite a bit and significantly increase your activity levels.
But on average, you should lose 10 pounds in exactly 5-6 weeks for a healthier and more achievable estimate. This means that you lose around 2 pounds per week, which is in line with the CDC's recommendation for safe weight loss at a rate of 1–2 pounds per week, a sustainable goal.
To lose 10 pounds in 3 days would mean decreasing your calorie intake by 35,000 calories in just 3 days! The Academy of Nutrition and Dietetics recommends a slow and steady weight loss of no more than 1/2 to 1 pound a week. Otherwise you are losing muscle and water, as well as weakening your bones.
In order to lose 5 pounds of fat in 2 days, you would need to have a calorie deficit equal to 2.5 lb. per day. Using the frequently-quoted 3,500 calories per pound, this would mean you would need a deficit of 8,750 calories.
Drinking Water Can Make You Burn More Calories
Drinking water increases the amount of calories you burn, which is known as resting energy expenditure ( 4 ). In adults, resting energy expenditure has been shown to increase by 24–30% within 10 minutes of drinking water.
The Academy of Nutrition and Dietetics recommends trying to limit weight loss to one or two pounds per week. It might seem slow, but people who do that are more likely to keep the weight off. If you want or need to lose weight faster than one to two pounds per week, don't try fad diets or severely limit your calories.
Losing 5 pounds in a week is doable, that doesn't mean you should do it. It's still safest to stick to the expert-recommended pace of one to two pounds of weight loss per week, according to the Mayo Clinic [4].
You'll lose weight
“You will likely lose more water weight than actually fat as your body uses its glycogen stores for fuel before dipping into actual fat,” she says. “As you release glycogen, you lose water and that is usually the reason for the rapid weight loss.
Our stomachs haven't been growling and we felt surprisingly satiated after a cup of tea at 4 PM. But, we weren't holding our breaths. From what we've heard, Day 2 is usually the hardest on a 3-day fasting journey. This seems to ring true even during a longer 7-day or 14-day fast.
The 72-h fasting induced significant decreases in glucose level, body weight, and an increase of ketone bodies that confirmed successful fasting of the volunteers. In addition, the median of BDI-2 increased significantly (4 vs. 7, p = 0.006).
So if you can make it through Day 2, it's better for your long-term fasting habit that you make it to day 3 so you start feeling much better and end on a positive note. 3-day fasts are great, because they are short enough that you can fit it into your schedule pretty regularly, depending on your goals.