MARY J. BLIGE ON HOW SHE STAYS FIT & HEALTHY

Mary J. Blige And Katie Couric

On tomorrow’s episode of the nationally syndicated daytime talk show "Katie," Mary J. Blige stops by to discuss how she stays fit and eats a healthy diet. She talks about working with stars like Barbra Streisand and Marc Anthony on her new Christmas album and her new film “Black Nativity.” See what happens when Katie talks her in to doing some beatboxing.

Plus, she performs “This Christmas” live in-studio!

Photo Courtesy Of: ABC/Disney