There is no long-term fasting research yet, but the benefits are promising and the risks low: You can always just quit. A limited-time fast might bump you off a plateau or out of a rut, says Keri Glassman, R.D., who advised our fasters during their diets, though she says that for some, fasting, even short-term, may be too rigid. That hints at the larger takeaway: Perhaps more than for traditional diets, these plans won't work for everyone.

When regular brewed coffee is chilled and stored, two things happen: First, it begins to lose whatever nuance of taste it once possessed; second, it starts losing the polyphenols that give coffee its health benefits. The best iced coffee is cold brewed; it takes more time to make so it will be more expensive, but you’ll taste the difference. Most notably it will be less bitter, which means you can get away with adding less sugar. And less sugar = fewer calories.
Founded by coffee guru Ben Weiss in his Princeton basement, Bai5, a new line of all-natural fruity drinks with exotic flavors, is forecast to rack up $125 million in sales this year. We can see why: Their Bubbles line—with flavors like Guatemala Guava, Jamaica Blood Orange and Bolivia Black Cherry—are the definitive Drink This on this list of Not That!s. Sweetened with fruit juice, erythritol and stevia (not aspartame) and powered by 45 mg of caffeine, thanks to the tea and coffeefruit, they’re delicious enjoyed straight-up or as a mixer. Interestingly, rather that beat Bai5, one soda titan joined them: the Dr. Pepper Snapple Group, who once only distributed the product, bought a stake in the company this past April. Meet the Best Diet Soda in America! And to blast even more fat, don’t miss these 30 Skinny Secrets from the World’s Sexiest Women!
Green tea can help you lose weight. Several studies have suggested that the flavonoids and caffeine in green tea can help elevate metabolic rate, increase fat oxidation and even improve insulin activity. One study showed that those who consumed green tea and caffeine lost an average of 2.9 pounds during a 12-week period, while sticking to their regular diet. Another study suggested the increase in calorie output was equal to about 100 calories over a 24-hour period. 

Another program called the 5:2 Fast Diet involves eating 5 days a week and fasting for the other 2 days, when women can get no more than 500 calories and men no more than 600. That’s a quarter of the amount you likely eat on the days when you don’t fast. Whether you eat those calories in one sitting or spread them across micro-meals throughout the day is up to you.

Sweetened with a touch of stevia, this is a new breed of protein shake, made primarily of hydrating coconut water. Grass-fed milk protein supplies more protein than three eggs–for a fraction of the morning prep time. If you need your fuel with caffeine-derived focus, they offer a coffee flavor that uses plenty of joe–in fact, it’s the second ingredient.


And Ian K. Smith, M.D. agrees. Dr. Ian is a Harvard graduate, founder of the SHRED Lifestyle, and the author several best-selling diet books. He explains that the liver, kidney, lungs, skin, and gastrointestinal system remove toxins that accumulate in the body. But following a detox diet full of natural foods can enhance the body's ability to cleanse. He adds, however, that dieters should make no assumptions about health when choosing a detox diet. "Detoxes have gotten very trendy, and many of them are unhealthy and quite dangerous."
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