'Biggest Loser' trainer swears by this crucial, body-sculpting move
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'Biggest Loser' trainer swears by this crucial, body-sculpting move





Whether you're a plank beginner or expert, these are the easy tips to keep in mind while holding the position.

"The Biggest Loser" trainer Dolvett Quince says this one exercise will tone your muscles, boost your workouts and strengthen your core.

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