The TV chef, 66, is set to join Paul Hollywood as a judge on the new series later this year after Prue Leith announced she was stepping down from the show.
The presenter, 51, had previously shared the secret to her slimmed-down figure after a pre-diabetes health warning pushed her to pursue a healthier lifestyle.
The This Morning and Great British Bake Off presenter, 51, discussed the show as speculation grows over who will replace long-standing hosts Tess Daly and Claudia Winkleman.
Alison Hammond showed off her incredible 11-stone weight loss as she worked up a sweat during a gruelling boxing session in a video shared to Instagram on Saturday.
Alison Hammond will reveal the car crash Strictly routine that made her break wind in front of her dance partner Aljaž Škorjanec as she appears on The Jonathan Ross Show.
The Formula One legend, 41, was appearing at a Ferrari fan event in Shanghai hosted by oil company Shell, when the presenter beamed Hammond's video on screen.