Negative-Calorie Foods To Help Undo Thanksgiving Dinner

Mushrooms make a great low-calorie substitute for meat. Whether you grill them, bake them, or chop them finely and use them to replace ground meat, you'll probably burn more calories than you actually eat; mushrooms have just 15 calories per cup.

If you're not eating fresh pumpkin, you should be. It has just 30 calories per cup and you'll get a serious workout carrying it home from the store and cutting it into oven-ready chunks. Plus, you don't need to add much to pumpkin to make it delicious; a little salt and cinnamon is all you need to make a quick and healthy snack or side out of your favorite fall gourd once it's cooked.

Kale is a great choice for healthy eating; it has about 33 calories per cup and its high-fiber content means your body will have to work harder (and burn more calories) to break it down.

A small tomato has more than a full gram of fiber and just 16 calories; try cutting tomatoes into wedges and drizzling them with balsamic vinegar, chopped basil, and salt for a delicious and super low-calorie salad.

Forget pasta; raw zucchini, cut into long thin "noodles" has just 20 calories per cup. Top it with raw tomatoes (that you've puréed with some garlic and salt) and you'll have a big, healthy bowl of food for hardly any calories. Be sure to keep the skin on the zucchini; the extra fiber can help you stay fuller longer.

Raw cabbage is crunchy, satisfying, and just 22 calories per cup. Toss it with raw carrots, some vinegar, and your favorite herbs or spices for a slaw-inspired salad.

There's a reason everyone eats salad to lose weight; salad greens are full of water and contain hardly any calories at all. Spinach has 7 calories per cup, arugula has 3, and romaine lettuce just 5. The key to a healthy, low-calorie salad is, of course, how you top it. Try replacing salad dressing with a squeeze of fresh citrus juice — you'll add tons of flavor and virtually no calories.

Raw radishes have a big crunch — a good thing if you're trying to burn calories chewing! A large radish has just 1 calorie, so eat up. Slice it thin and add to salad or dip into a high-protein, high-fiber dip like hummus.

Crunching on raw carrots is good for more than your eyesight. A medium carrot has 25 calories and more than a full gram of fiber. Eating carrots raw will burn more calories than eating ones that are cooked (because you'll have to chew them more) but don't be afraid to roast your carrots in the oven if it will make you more likely to eat them; you'll still consume little to no calories by eating cooked carrots.