Set (and write down) reasonable expectations for what you plan to achieve during your challenge. “You can absolutely make a difference in 10 days,” says Brooke Alpert, RD, a dietitian in New York City and the author of The Diet Detox, but don’t expect to shed 20 pounds a la The Biggest Loser. “While actual weight loss will be around three to four pounds, you can really notice the difference in the way your body feels in about a week.”
To lose fat and keep it off requires an approach that is both effective and easy to maintain. For most, a wide variety of foods in the right quantities and at the right times is best. If we eat too much - the standard "three square meals" a day - we run the risk of putting on weight due to the sluggish metabolism this encourages combined with the surplus of calories that will require burning at any one time. Eat too little and we again encourage a slow metabolic rate due to muscle loss while discouraging the thermogenic effect (when foods themselves increase the metabolism) that foods, in sufficient quantities, will create.