Many would put her age-defying agility and enviable figure down to her professional ballet training and regular Pilates.
But Debbie McGee, one of the favourites for the Strictly Come Dancing crown this year – making her possibly the oldest winner in the show’s history – has credited something much more bizarre.
The 59-year-old widow of magician Paul Daniels starts each day with a spoonful of finely ground silver particles.
The supplement she swears by is called Active Silver and contains what’s known as ‘colloidal’ silver — microscopic particles suspended in water, which many believe helps ward off infection, boosts the immune system and can be used to treat everything from acne to eye infections.