January 11, 2016 10:17 AM

Jennifer Cassetta is ready to step up to the plate.

PEOPLE is exclusively revealing that the trainer and nutritionist will be the newest expert on ABC’s My Diet Is Better Than Yours. Cassetta will mentor contestant Taj Robinson after she chose to ditch expert Jovanka Ciares and try a new diet plan.

Cassetta, 39, is a third degree black belt in hapkido, a form of martial arts that focuses on self-defense, and will incorporate her background in the art while training Robinson.

“Taj loves working with weights, because she wants to feel strong,” Cassetta tells PEOPLE. “And then I’m teaching her martial arts.”

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“It’s a great core exercise, with so many mental and emotional benefits. Martial arts training is actually really like high intensity interval training because of the intensity of the workouts and the rest periods. But you’re also learning to defend yourself at the same time.”

Kinetic Content

Cassetta says she took a hapkido class in 2000, and fell in love with the practice.

“It’s the total package, because it works your mind, body and spirit,” she says. You become not just physically stronger, but mentally stronger.”

Along with the kick-butt workouts, Cassetta is putting Robinson, 37, on a simple pescatarian and gluten-free diet.

“It’s basically a vegetable-focused diet, but with fish to get all of those great benefits, like anti-inflammatories, omega-3s and healthy fats,” she explains.

With the diet and exercise plans together, Cassetta is positive that she and Robinson will be the winning team.

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“I’m confident in this plan because it is so holistic, it brings so much to the table,” she says. “A lot of the other plans are very one-dimensional, but this covers all of the bases, mentally and physically.”

“I call it the Strong, Safe, and Sexy plan. Strong mentally and physically, safe from lifestyle related injuries, and sexy because you’ll look great doing it.”

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