Strange but True Health Tip: Drink coffee to have a better nap. In a Japanese study that examined how to make the most of a nap, people who took a "coffee nap"—consuming about 200 milligrams of caffeine (the amount in one to two cups of coffee) and then immediately taking a 20-minute rest—felt more alert and performed better on computer tests than those who only took a nap.

Strange but True Health Tip: For healthy teeth, don't brush after eating. Don't brush your teeth immediately after meals and drinks, especially if they were acidic. Acidic foods—citrus fruits, sports drinks, tomatoes, soda (both diet and regular)—can soften tooth enamel "like wet sandstone," says Howard R. Gamble, immediate past president of the Academy of General Dentistry. Brushing your teeth at this stage can speed up acid's effect on your enamel and erode the layer underneath. Waiting 30 to 60 minutes before brushing.

Strange but True Health Tip: To wear a smaller size, gain weight. Muscle weight, that is. If two women both weigh 150 pounds and only one lifts weights, the lifter will more likely fit into a smaller pant size than her sedentary counterpart. Likewise, a 150-pound woman who lifts weights could very well wear the same size as a 140-pound woman who doesn't exercise. The reason: Although a pound of fat weighs the same as a pound of muscle, muscle takes up less space.

Strange but True Health Tip: To eat less, eat more. Grabbing a 100-calorie snack pack of cookies or pretzels may seem virtuous, but it's more likely to make you hungrier than if you ate something more substantial.

Strange but True Health Tip: Drink water when you're bloated. When you feel bloated, drinking water sounds as if it would only make matters worse, but it can often help. If you're on a high-fiber diet, for instance, then your body needs more water to work more efficiently. "Water mixes with water soluble fiber and makes it into a gel like substance. This affects the motility of the gut and reduces the symptom of bloating." Drinking more water also relieves bloating caused by dehydration. When you're dehydrated, your body clings to the water your body does have, causing you to puff up.

Strange but True Health Tip: Ditch diet soda to lose weight. A University of Texas study found that diet soda drinkers had a 70% greater increase in waist circumference than non-drinkers over the course of about 10 years.

Strange but True Health Tip: Exercise when you're tired. After a long, exhausting workday, exercising sounds like the last thing you'd want to do, but getting your sweat on will actually energize you. Fatigue along with mood and depression improved after a single 30-minute moderate intensity exercise session.

Strange but True Health Tip: Handwrite notes to boost your brainpower. Typing notes enables you to jot down more material, but you're more likely to remember those notes if you handwrite them, according to research from Indiana University. "To learn something means you have processed it," says Dr. Towfigh. "And when you take handwritten notes you 'process' or learn more information. You begin the learning process as you listen to the lecture." Plus, since you look at the page on which you are writing, you naturally review the material and reinforce the information you've already processed.