Dark Chocolate is good for the heart. Research shows that dark chocolate can improve heart health, lower blood pressure, reduce LDL cholesterol, and increase the flow of blood to the brain. It also boosts serotonin and endorphin levels, which are associated with improved mood and greater concentration. Look for chocolate that is 60 percent cocoa or higher.
Caffeinated Coffee
A study published in the journal Physiology & Behavior found that the average metabolic rate of people who drank caffeinated coffee increased 16 percent over those who drank decaf. Caffeine stimulates your central nervous system by increasing your heart rate and breathing. Coffee is consider as a good to fire up your metabolism.
Chili Peppers
It turns out that capsaicin, the compound that gives chili peppers their mouth-searing quality, can also jumpstart your fat-burning, muscle-building engines.
Yogurt
The probiotics in yogurt may help you drop pounds. British scientists found that these active organisms boost the breakdown of fat molecules in mice, preventing the rodents from gaining weight.
Grilled Chicken Breast
The protein in lean meat like chicken, fish, or pork loin isn't just good at squashing hunger and boosting metabolism—it's also a top source of energy. People who ate higher amounts of protein had higher energy levels and didn't feel as tired as people with proportionally higher amounts of carbs in their diet.
Honey
Penn State scientists have discovered that honey is a powerful cough suppressant—so next time you¹re hacking up a lung, head for the kitchen. When parents of 105 sick children doled out honey or dextromethorphan (the active ingredient in over-the-counter cough medicines like Robitussin), the honey was better at lessening cough frequency and severity. Try a drizzle in a cup of rooibos tea.
Margarine
Not just any margarine, mind you—those containing plant sterols. In a Tufts University study, people who ate a butter substitute containing plant sterols with three meals each day saw their LDL (bad) cholesterol drop by 6 percent. How? The researchers say that plant sterols prevent cholesterol from being absorbed by the intestine. Promise Active and Smart Balance HeartRight are two great options.
Green Tea
Brazilian scientists found that participants who consumed three cups of the beverage every day for a week had fewer markers of the cell damage caused by resistance to exercise. That means that green tea can help you recover faster after an intense workout.
Sardines
According to research published in Nutrition Journal, fish oil can help increase your ability to concentrate. Credit EPA and DHA, fatty acids that bolster communication among brain cells and help regulate neurotransmitters responsible for mental focus. Salmon, trout, halibut, and tuna are also great sources of EPA and DHA.
Bananas
The antioxidants in bananas, apples, and oranges may help protect you from Alzheimer's, report Korean scientists. The researchers discovered that plant chemicals known as polyphenols helped shield brain cells from oxidative stress, a key cause of the disease.
Steak
Vitamin B12, an essential nutrient found in meat, milk, and fish, may help protect you against brain loss, say British scientists. The researchers found that older people with the highest blood levels of the vitamin were six times less likely to have brain shrinkage than those with the lowest levels.
Carrots
Researchers from Harvard found that men who consumed more beta-carotene over 18 years had significantly delayed cognitive aging. Carrots are a tremendous source of the antioxidant, as are other orange foods like butternut squash, pumpkin, and bell peppers.
