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Cravings tend to ebb and flow throughout the day. One minute you're jonesing for something sweet; the next, all you want is to get your hands on a bag of salty potato chips. Yielding to either craving can be enough to derail any diet, so the trick is to keep your portions (and calories) down while satiating your sweet or salty needs.

AOL Health is here to give you a leg up on low-calorie savory snacks. Cure cravings and keep your diet in check by reaching for 100-calorie snack packs or choosing healthy alternatives, such as fiber-filled edamame or freshly popped popcorn.

Need something sweet instead? That's Fit helps you cure those sugar cravings.

Like a hefty helping of tomatoes with your meal? Then you're in luck. A new study from the UK's Reading University shows that tomatoes may help control hunger.

If you thought BPA was only hiding in your plastic, here's a health update: the December 2009 issue of Consumer Reports tells us BPA is in a variety of name-brand canned food items including Progresso Vegetable Soup and Campbell's Condensed Chicken Soup.

Now for a light-hearted link we love: 10 workout videos to get you LOLing at your desk, if not well, exercising. Hey, laughter burns calories too.

Whether extra stress, sex (hey -- you were thinking it, too) or sick days is the reason you've lost a few extra pounds, our keep-the-weight-off guide will keep you looking slim in your loose-fitting clothes.

Are you making the most of your meals by filling up on the hottest antioxidants -- nutrients that can help you prevent wrinkles and grow shinier hair and stronger nails? Click through AOL Health's photo slide show of the best of the best nutritional powerhouses out there.

You may have realized your Kraft Mac and Cheese contains no real cheese, but did you know that Smucker's "100 percent fruit" label is anything but truthful? Ingredient secrets food companies don't want you to know.

We at That's Fit and AOL Health know you've got a lot going on in your lives besides staying in great shape, and we realize that more than just diet and exercise goes into feeling your best every day. That's why we're sharing some of the exciting reporting going on at AOL Health.

It's 3 p.m. You're staring at the monitor, eyes partially glazed over, drifting dangerously between consciousness and dead sleep. Before your head hits the desk, you lurch out of the chair and careen toward the coffee machine. We've all been there. It's the dreaded energy crash.

When afternoon exhaustion kicks in, the first thought is to grab a cup of coffee or can of Diet Coke in an attempt to power through the rest of the day. But even in all of its energizing glory, caffeine can not only leave you feeling shaky and jittery, but it can also affect sleep patterns. So instead of just reacting to an energy crash, you can be proactive by preventing afternoon fatigue through the foods you eat. Whether it's staying away from the vending machine or learning how to balance protein and carbs, AOL Health gives you the advice you need to help you get through the day.

Are you an energy drink junkie? Find out what you're really putting in your body, here.

One of the most challenging aspects of dieting is keeping the hunger pangs away. Here's a tip: If you fill up on fiber during the day, you have a less-likely chance of falling off the diet wagon throughout the day. Starting your morning with a high-fiber cereal is a start, but you can keep your fiber content up throughout the day without resorting to the usual suspects -- prunes, salad and oatmeal. For example, if prunes don't appeal to your palette, eat a pear. An average size pear packs five grams of fiber, compared to only three grams in one prune.

Here, AOL Health features eight more foods chock full of fiber, including edamame, that will give your meals variety and keep you satiated throughout the day.

Are you getting enough fiber in your diet? Find out here.

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From your bra size (large may indicate diabetes, ladies) to the width of your calves (skinnier is the problem here -- it may signal heart trouble), body characteristics can indicate a wealth of information about your overall health. Discover your body's 10 weirdest health clues this week on AOL Health.

We at That's Fit and AOL Health know you've got a lot going on in your lives besides staying in great shape, and we realize that more than just diet and exercise goes into feeling your best every day. That's why we're sharing some of the exciting reporting going on at AOL Health.

Lower back pain is a common complaint among adults -- but the good news is staying active can help. This week on AOL Health, we cover which exercises can help reduce lower back pain.

You've probably heard it from us before, but your (good) diet and exercise habits are keeping you young. Knowing the healthier answer to something as simple as "Soup or salad?" could add two years to your life. Continue reading to learn how to had 22 young years to your life.

Avoiding the scale, lifting weights and flossing are just a few of the health mistakes smart women make. Read all 14 -- and why they matter in the long run -- at AOL Health.

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Quinoa, a nutty-flavored grain, is packed with protein and fiber and is one of the most nutritious foods on the planet. This week, AOL Health reveals a number of ways -- from breakfast and salads, to stuffing and risotto -- to incorporate it into your diet. Plus, click through a gallery of other top superfoods -- and learn what benefits they can provide for you.

Photo: Lester Cohen, WireImage

Despite all the headline-stealing heartbreak, getting dumped did wonders for Jennifer Aniston's figure. (And she's doing wonders for the image of the fit-after-40 crowd.) Find out how she and others have rebounded from lost love by getting fitter and hotter than ever.

We at That's Fit and AOL Health know you've got a lot going on in your lives besides staying in great shape, and we realize that more than just diet and exercise goes into feeling your best every day. That's why we're sharing some of the exciting reporting going on at AOL Health.

The first lady isn't the only leading woman with lean arms. Check out this photo gallery of our favorite famous guns -- and learn how to get the look.

Just what does it take to attain timeless beauty? From Marilyn to Twiggy, AOL Health reveals the diet and exercise routines that helped them achieve their famous shapes.

If your aches and pains make you feel decades older than your peers, you may not be exaggerating. Recent research reveals that a 50-year-old living with chronic pain may have a body that looks similar to a pain-free 75-year-old. AOL Health offers exercises and nutrition advice to help treat your problem.

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We know water's great for weight-loss, appearance and overall mental and physical performance. But can this simple beverage also make you sick? This week, AOL Health takes a look at what's lurking in your tap and what you can do to discover the quality of water -- and what, if any, changes in regulation we can help make happen. Plus, discover the 10 dirtiest tap-water states.

We at That's Fit and AOL Health know you've got a lot going on in your lives besides staying in great shape, and we realize that more than just diet and exercise goes into feeling your best every day. That's why we're sharing some of the exciting reporting going on at AOL Health.

Guys, let's get this straight once and for all, it's time to stop overeating healthy foods -- and that's just one diet "don't" you're probably doing.

Why do we keep on letting ourselves fill up on empty calories? AOL Health's done the digging -- let's do the eating. Try these nine appetite-suppressant foods.

Whether you're counting calories, or just trying to maintain a healthy weight, you'll find nearly a month's worth of tasty menus in AOL Health's diabetes-friendly cooking guide.

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"There are certain key nutrients that make a huge difference in not just how healthy you feel on the inside, but how healthy you look on the outside," says Tara Gidus, team dietitian for the Orlando Magic and spokesperson for the American Dietetic Association. Check out her "No-Effort Guide" to looking great this week on AOL Health. One tip? Do this simple detox: Drink enough water. This liquid flushes out toxins and transports oxygen to your cells, which can not only boost skin clarity and reduce the appearance of wrinkles, but water also affects how defined your muscles look and how much power they provide you when you need them for other purposes -- say working out. So what are you waiting for? Start looking better today.

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When asked for your weight, do you shave a few pounds off the real number? Forty-two percent of AOL Health readers surveyed said they wouldn't tell their friends the truth about their weight -- and similarly, 39 percent said they would drop up to 10 pounds off of the weight reported on their driver's licenses. Surprisingly, experts say a little dishonesty may not be a bad thing. Continue to AOL Health's "Weight-Loss (Dis)Honesty Survey Results Revealed" to find out which diet secrets to keep, and which are better off revealed.

We at That's Fit and AOL Health know you've got a lot going on in your lives besides staying in great shape, and we realize that more than just diet and exercise goes into feeling your best every day. That's why we're sharing some of the exciting reporting going on at AOL Health.

Carrying some extra weight around your waist? Obesity experts and bestselling authors Drs. Mary Dan Eades and Michael R. Eades claim to have the remedy. Their new book "The 6-Week Cure for the Middle-Aged Middle" promises to show you how to get your tummy back in shape. AOL Health has six steps you can start trying today.

Do You Know What's Really in Your Food? Take AOL Health's Weird Food Ingredients quiz to see if you know what bathroom cleaning ingredient is also found in chips, what hot dogs and headaches have in common and more!

Think good luck and genes are all it takes to live to 100 (and beyond)? These centenarians (members of the over-100 club) share insight about why they think they've lived so long, including what they eat (and what they avoid) and how they've stayed active over the years.