Portion control is a big part of losing weight and keeping it off, according to the Mayo Clinic. Pre-packing your lunch could help. “Learn about portions and embrace the idea, not just because they help you lose weight, but because it’s great to know the right size for your own body and activity level,” Dr. Bazilian says. Portioning out your lunches also takes the guesswork out of eating out and could help you save money. These are the tips a weight loss coach won’t tell you. 
The best diet for losing weight is Weight Watchers, according to the experts who rated the diets below for U.S. News. Volumetrics came in second, and Jenny Craig and the vegan diet were third on this overall weight loss ranking list, which takes into account short-term and long-term weight loss scores. Some other diets performed as well or better in our rankings for enabling fast weight loss, but long-term weight loss is more important for your health.
To use the calculator, provide your statistics, then select "fat loss" as your goal. Pick an activity level that matches how active you really are. If you say you're more active than you are, the calculator will give you more calories per day. If you consume all of them, you'll gain weight. Only by being honest about your activity level can you start to lose weight.

The HMR program’s approach makes the top of the list of best diet plans because the Decision-Free plan suggests you can lose up to 66 pounds in 26 weeks. You could also drop 37 pounds on its Healthy Solutions option. The Decision-Free diet is a medically supervised, very low-calorie diet of shakes and snacks; Healthy Solutions includes shakes, snacks, entrees, and your own fruits and vegetables. You should expect to exercise plenty to lose the most weight; you can also sign up for health coaching to boost success. The convenience is a plus—but you will get a very limited choice of foods and aren’t allowed to drink alcohol or eat out. And remember: You risk gaining weight once you go back to real food. Check out these 42 tips for losing weight fast.


Portion control is a big part of losing weight and keeping it off, according to the Mayo Clinic. Pre-packing your lunch could help. “Learn about portions and embrace the idea, not just because they help you lose weight, but because it’s great to know the right size for your own body and activity level,” Dr. Bazilian says. Portioning out your lunches also takes the guesswork out of eating out and could help you save money. These are the tips a weight loss coach won’t tell you. 
Ah, quinoa. This healthy, rich-tasting whole grain/seed has so many nutritional riches that it puts refined grains like white rice to shame. Tofu is the perfect sidekick because it’s both waistline-friendly (per bite, tofu tends to have about one-third the calories of meat and poultry) and heart-friendly (tofu has no artery-damaging saturated fat or cholesterol).
Keep in mind that the first time that you sit down and plan meals to lose weight the process will take a little longer. But once you have a system in place, you'll breeze through the ritual—you might even start to enjoy it. Getting organized feels good and reaching your weight loss goals feels even better. So take enough time to follow through with the prep steps to get used to your diet plan and stay on track. 
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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