Burger + Frozen Yogurt
The next time you eat a food high in saturated fat, follow it with a low-fat, calcium-rich dessert. Calcium binds to fatty acids in the digestive tract, blocking their absorption. In one study, participants who ate 1,735 mg of calcium from low-fat dairy products (about as much as in five 8-ounce glasses of fat-free milk) blocked the equivalent of 85 calories a day.

Green Tea + Lemon
In a study of more than 40,500 Japanese men and women, those who drank five or more cups of green tea every day had the lowest risk of dying of heart disease and stroke. Researchers attribute the protective effect to catechins, powerful antioxidants. Trouble is, less than 20% of these relatively unstable compounds survive digestion. To get more out of every cup, squeeze in some lemon juice. The vitamin C in lemons helps your body absorb 13 times more catechins than it can obtain from plain tea alone, according to a Purdue University study.

Exercise + Music
Twenty-one minutes of exercise is all it took to lift the moods of cardiac rehabilitation patients in an Ohio State University pilot study. But when participants listened to Antonio Vivaldi's Four Seasons on headphones, they performed significantly better on a verbal fluency test afterward. Researchers believe exercise boosts cognitive performance by stimulating the central nervous system, and the addition of music may help organize thoughts.

Pot Roast + Carrots
This popular comfort food makes you feel good for a reason. Carrots are chock-full of vitamin A, a retinol that plays a key role in preventing and fighting off infections. But without the zinc in the beef, your body wouldn't be able to use it. Vitamin A can travel through the blood only when it's bound to a protein. "And zinc is required to make that retinol-binding protein," says Roberta L. Duyff, RD, author of American Dietetic Association Complete Food and Nutrition Guide. "So if you don't have enough zinc, vitamin A is not going to move from the liver to the tissues, where it does its job."

Salad + Avocado
Spinach may be good for your eyes, but avocado makes it even more effective. Researchers at The Ohio State University found that when adults ate a lettuce, spinach, and carrot salad with or without 3 tablespoons of avocado, the avocado eaters absorbed 8.3 times more alpha-carotene, 13.6 times more beta-carotene, and 4.3 times more lutein than the others. Researchers believe the healthy fats in avocado increase the absorption of these fat-soluble carotenoids, which are associated with a decreased risk of macular degeneration and cataracts.