Also known as Branch Chain Amino Acids. BCAAs are three amino acids known as Leucine, Valine and Iso-Leucine. They help prevent muscle breakdown and can be bought as yummy flavoured powders to use in place as sports drinks. Drink them during your fat burning workout instead of water as they will help you tone up as you lose that belly and may even help in the formation of abdominal muscles.
Losing fat without also losing muscle is a bit more complicated than simply losing weight. Fat loss programs involve paying more attention to the types of foods you eat, rather than just focusing on reducing calories. They also includes different kinds of exercises that burn fat and preserve muscle at the same time, like weight-lifting and strength-training moves. This can sometimes lead to higher numbers on the scale, but the end result will be a smaller, more toned shape.
For years, research has supported the fact that Weight Watchers is one of the best weight-loss diets. Thanks to its flexibility, easy-to-understand food tracking system, and group support, Weight Watchers consistently ranks number one for "best weight loss diet" and "best commercial diet" in the U.S. News & World Report rankings. (Oprah's endorsement probably didn't hurt either!) They recently revamped their program and changed their name to WW to signify a focus on overall wellness—not just weight-loss—so that users who aren't focusing on weight can also use the program to eat better, work out more, or develop a more body-positive mindset.
The Academy of Nutrition and Dietetics (AKA the top nutrition authority in America) released a revised paper this year saying that both vegetarian and vegan diets are best for people's health as well as the environment. If you're not ready to make a complete shift to meatless and cheese-less, consider "part-time" vegan and vegetarian plans, where you eat mostly plant-based at breakfast and lunch or on weekdays, and then eat fish, meat, dairy, and eggs only during designated times.