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. 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. You also are much more likely to gain it all back.
Dr. Bazilian says one of the worst things she sees as a dietitian are people who have an “all or nothing” approach to nutrition. Instead of setting rigid rules that could discourage you, Dr. Bazilian suggests applying gentler guidelines along with positive reinforcement can help. “If you’re trying to shift your habits around an afternoon snack that consists of sugary baked good or cookie or candy and a coffee, perhaps build in room for a day (one!) where this may happen either spontaneously or during a planned instance,” she says. “Then navigate the rest of the week keeping in mind that you’ve built in some flexibility and you’re not depriving yourself.” Next, check out these ways to lose weight without a lick of exercise. 
Real talk: It could take weeks or months to see the metabolic effects of exercise on the scale, and even then, building muscle, which is denser than body fat, could lead to weight gain. "Do what you like because it’s good for you," Dr. Seltzer says, noting the way exercise is awesome for your heart, mental health, and more—and that not all measure of progress can be seen on the scale.
By planning your meals and logging what you eat and drink, you will start memorizing how many calories are in your favorite meals and ingredients. Best of all you will learn your own eating habits and cravings, so over time you can better plan your meals to suit your cravings. After a couple weeks if you see you consistently have a 3:00 pm craving for carbs, you can head off that craving in advance with a skinny sandwich at lunch. Or, a sweet craving at 10:00 am can be managed with a sweet oatmeal breakfast.
Diet plans can be a great resource for people looking to lose weight or streamline their nutrition. When choosing one program over the other, think about the individual foods allowed on the diet—if you must source some ingredients yourself, does this fit into your budget? Do the meals satisfy your preferred tastes, and do they incorporate alternatives for food allergies or sensitivities?
If you want to lose weight you should start by avoiding sugar and starch (like bread, pasta and potatoes). This is an old idea: For 150 years or more there have been a huge number of weight-loss diets based on eating fewer carbs. What’s new is that dozens of modern scientific studies have proven that, yes, low carb is the most effective way to lose weight.
Some diet plans, such as the MIND diet and the DASH diet, are meant to focus on certain areas of health — and weight loss may be a bonus. Others are created with weight loss as a primary goal. “It is important to remember that we are all very unique individuals,” says Kyle. “We all have different states of health and different lifestyles, which could affect what diet plan is best for us. That means that you should not be considering what is working for your friends or family members — and instead should pay attention to what works for you individually.”
This well-known plan promises weight loss of up to two pounds per week, and it has plenty of evidence to back it up. The bonus is that it’s built around real food. Weight Watchers has a strong community to support your success and offers personal coaching for an additional cost. The latest plan, WW Freestyle, has 200 zero Points foods, which makes tracking what you eat less of a burden. If you have a sweet tooth, this plan may be tough because sugar is heavily penalized. Weight Watchers doesn’t accept children under 13, pregnant women, or those with eating disorders. Find out which supermarket foods are best for weight loss.

Meal prep is a simple and easy way to track your food intake. Whether you just want to stay away from over-processed foods and eat healthy to build muscle, lose weight, or simply feel better, meal prep is a great idea. Prepping all, or at least most your meals, ahead of time makes cooking and eating healthy, nutritious food easier and quicker than ordering take out or grabbing some fast food on the go.


Lastly, to help you stay motivated I recommend you log your weight loss results so that you can gather an average. You will always have good weeks and bad weeks, but it’s the average that counts. Every weigh in (only weigh in once per week) write the pounds lost on your calendar. At the end of 8 weeks add up all the weight loss pounds and divide by 8 for your 8 week average. This will help you stay motivated and see your results. Anytime you have a bad week, think of your weight loss average and know this is all just part of the process.
If the diet is a quick fix rather than one that promotes lasting lifestyle changes, this could pose a problem. In particular, extreme diets that promise big weight loss up front aren’t always sustainable — and you may end up overeating or even binge eating if you feel deprived. “Consider if the diet’s habits are ones you can continue throughout your lifetime, not just 21 or 30 days,” says Angie Asche, RD, a sports dietitian in Lincoln, Nebraska.
Lose weight, eat well and feel great with this easy weight loss meal plan. This simple 1,200 calorie meal plan is specially tailored to help you feel energized and satisfied while cutting calories so you can lose a healthy 1 to 2 pounds per week. Each day of this 7-day plan features high protein, high fiber foods (a combination that research shows can help with weight loss by keeping you feeling fuller for longer) and strategically balances calories throughout the day so you won't feel starved. The calorie totals are listed next to each meal so you can easily swap things in and out as you see fit. Couple this healthy meal plan with daily exercise and you're on track to lose the weight.
Becky Duffett is a contributing nutrition editor for Fitbit and a lifestyle writer with a passion for eating well. A former Williams-Sonoma cookbook editor and graduate of San Francisco Cooking School, she’s edited dozens of cookbooks and countless recipes. City living has turned her into a spin addict—but she’d still rather be riding a horse. She lives in the cutest neighborhood in San Francisco, spending weekends at the farmers’ market, trying to read at the bakery, and roasting big dinners for friends.
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