Jessica Biel's workout is a 6-move masterclass in building sustainable strength - here's how to do it

Jessica Biel standing in front of wooden board with signage of Better Sister television show.

The actress, who recently starred in Amazon Prime's The Better Sister, revealed she'd been inundated with positive feedback about the show and about her physique in one particular scene, where she wears a white open-back dress.

Taking to Instagram recently, the star said such a look was "not maintainable unless you are living the strictest, most rigid lifestyle with your nutrition and your fitness". This is something she said she "cannot do" all of the time.