Many methods to improve your health are pretty straightforward: to lose weight, eat less and exercise more; to boost your energy, get more sleep; to prevent dehydration, drink more water. Others,however, are totally counter intuitive. The following 12 tips really do work—but they may leave you scratching your head.

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.
Why does this work? A 20-minute nap ends just as the caffeine kicks in and clears the brain of a molecule called adenosine, maximizing alertness."Adenosine is a byproduct of wakefulness and activity," says Allen Towfigh, MD, medical director of New York Neurology & Sleep Medicine."As adenosine levels increase, we become more fatigued. Napping clears out the adenosine and, when combined with caffeine, an adenosine-blocker, further reduces its effects and amplifies the effects of the nap."

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, says Amy Goodson, RD, dietitian for Texas Health Ben Hogan Sports Medicine. "Eating small amounts of carbohydrates does nothing but spike your blood sugar and leave you wanting more carbs." Goodson recommends choosing a protein such as peanut butter or string cheese with an apple."They are higher in calories per serving, but the protein and fat helps you get full faster and stay full longer—and you end up eating fewer calories overall," she says.

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, says James Lee, MD,Gastroenterology with St. Joseph Hospital in Orange, Calif. If you're on a high-fiber diet, for instance, then your body needs more water to work more efficiently, says Dr. Lee. "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.