That is, until it's snack time—then, if you're on the keto diet, your'e basically SOL (unless, you know, you like having an entire steak for a snack). Think about it: All the best snacks are off limits on the keto diet (damn that fickle 70 percent fat, 25 percent protein, 5 percent carbs ratio). Granola bars, crackers, cookies—all off-limits on a keto diet.

This portable, affordable protein is a must-eat for anyone looking to lose a few. Why? Canned tuna is a prime source of a specific omega-3 fatty acid, docosahexaenoic acid (DHA), which has been shown to "turn off" fat genes in the abdomen, preventing belly fat cells from growing larger. To keep calories to a minimum, skip the mayo and instead add a few cranks of ground pepper, a splash of balsamic vinegar and serve the fish over a bed of greens—super filling, yet low-cal.

Snacking helps prevent the dips in blood sugar that can make you famished. But in order to avoid overindulging, you need to control cravings. So make sure you are getting all the elements of a satisfying meal: healthy carbs, a touch of lip-smacking fat, and the linchpin — protein. If you switch out snacks (which is fine), don't replace the nuts and dairy with more sugary treats.

If you're craving something sweet and sinful, grab this mini pack of jelly beans. With just 4 calories in each bean, they're the slimmest way to enjoy cotton candy, toasted marshmallows, and strawberry shortcake. As an added bonus: Jelly Belly uses real fruit purees to flavor their beans. It's still candy in every sense, but it's certainly the lesser of many sugar-loaded evils.
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