KANSAS CITY — By Jan. 14, one-third of Americans already will have abandoned their New Year’s resolutions, according to a survey by True Global Intelligence, and by the end of the month up to half will have given up.

However, cheaters prosper when keeping fitness- or diet-related resolutions, said Jim White, dietitian and exercise physiologist for the American College of Sports Medicine.

“If you’re dieting, occasional indulgence is one of the keys to succeeding,” Mr. White said. “Allowing some indulgences provides a break from normal dieting without sabotaging your results. So, it’s not only okay to cheat as part of your resolution, it’s encouraged. I recommend that people treat themselves with the indulgences they crave most.”

To cater to these cravings — especially cravings for chocolate — Krispy Kreme Doughnuts is introducing the Chocolate Glaze Collection, featuring four of its classic filled donuts made with chocolate dough and chocolate glaze. The new pastry portfolio includes the Chocolate Glazed Cake Batter Doughnut, Chocolate Glazed Raspberry Filled Doughnut, Double Chocolate Glazed Kreme Filled Doughnut and the Chocolate Glazed Oreo Cookies & Kreme Doughnut.

“If you’re taking a brief break from your diet or exercise routine, you may as well make it worth it,” said Dave Skena, chief marketing officer for Krispy Kreme. “This is worth it.”

“If you’re taking a brief break from your diet or exercise routine, you may as well make it worth it.” — Dave Skena, Krispy Kreme

For those who seek a savory indulgence during their dieting, McDonald’s is debuting three new menu items starring thick-cut, applewood smoked bacon: the Big Mac Bacon, Quarter Pounder Bacon and Cheesy Bacon Fries.

While some restaurants are rolling out cheat-worthy offerings, others are introducing healthier dishes to help consumers stick to their New Year’s resolutions.

Bruegger’s Bagels is serving new sandwiches and ingredients that “suit a healthy lifestyle,” the company said, including new vegan cream cheese-style spread and skinny bagels. The new healthy handhelds include the Skinny Bacon, Avocado & Tomato Egg White Sandwich and the Supernova Sandwich, which features smoked Nova lox salmon and avocado.

“Our fans are telling us they want more ways to customize their favorite menu items to fit their lifestyle and dietary needs,” said Tyler Ricks, president of Bruegger’s Bagels. “By offering ingredients like egg whites, dairy-free Daiya Cream Cheeze Style Spread and avocado, we are giving them the chance to customize their diets to meet their nutrition needs.”

At B.GOOD, a new salad, vegetable dish and protein smoothie are joining the menu for consumers committed to cleaner eating. The restaurant chain is introducing the Citrus & Avocado Salad, Maple Roasted Carrots and Mocha Protein Smoothie.

“For many people, eating healthier is top of mind as they begin the new year,” said Linh Aven, executive chef for B.GOOD. “Whether they’re working out and seeking a naturally protein-packed smoothie or adopting a flexitarian lifestyle and looking for salads and veggies that are light and fresh, we have options to satisfy those needs.”

View a slideshow of new menu items.