Heidi Montag turns fitness guru

After trying her luck in singing, fashion designing, and dry shampoo line, the her new business is a downloadable workout series, developed with her trainer.

Reality TV star Heidi Montag-Pratt has turned into a fitness guru.

After trying her luck in singing, fashion designing, and dry shampoo line, the The Hills star’s new business is a downloadable workout series, developed with trainer Chad Waterbury.

"Staying fit is something I''m really passionate about," the New York Daily News quoted him as telling People magazine.

"I work out with a strength-and-conditioning coach 90 minutes a day, five days a week," she added.

The workout features full-body conditioning, with both light and heavy weights done as quicky as possible, so that fat burns faster.

It also contains nutritional advice like avoiding all "white" foods and filling up on lean meats, green vegetables, and fruits.