This South American tea comes from the yerba mate plant. Its leaves and twigs are dried, usually over a fire, and steeped in hot water to make an herbal tea. This caffeine-containing tea, often called mate, may help promote weight loss. Some consider it an ideal substitute for coffee, minus the bitterness. The Mayo Clinic advises, however, to enjoy this tea in moderation. Some studies have found that people who drink large amounts of mate over prolonged periods may be at increased risk for certain types of cancer such as cancer of the mouth, lungs and esophagus (smoking in combination with drinking mate increases the cancer risk).
So even if tea doesn't help you lose weight, there are plenty of other reasons to drink up. Drinking black tea, which is high in flavonoids, was tied to improved cardiovascular function in a small study in the Journal of Hypertension. Both black and green tea were shown to decrease risk of stroke and coronary heart disease in another study from Food & Function. And a 13-year study of nearly 40,000 people in the Netherlands found that those who drank tea frequently had a lower risk of heart disease-related death compared to people who didn't drink tea. While the four varieties of true teas tend to provide highest concentrations of antioxidants, herbal teas have also been linked to better heart health (hibiscus tea in particular) and other benefits.
It seems intermittent fasting can help your mind as well as your body. Fasting has been shown to help improve memory your memory, reduce oxidative stress, and preserve learning function[*]. Some researchers believe that because humans went thousands of years where food was not readily available, they adapted to function at a high-level (both mentally and physically) while in a food-deprived state[*].