Judging by the gym video, Hathway is adding some serious muscle to her frame completing a series of weight and circuit exercises with her trainer.
Following the birth of her son, Jonathan, 2, the One Day actress spoke out about the pressure on new mum's to bounce-back after baby.
“There is no shame in gaining weight during pregnancy (or ever). There is no shame if it takes longer than you think it will to lose the weight (if you want to lose it at all). There is no shame in finally breaking down and making your own jean shorts because last summer’s are just too dang short for this summer’s thighs,” she wrote on Instagram in August 2016. “Bodies change. Bodies grow. Bodies shrink. It’s all love (don’t let anyone tell you otherwise),” she wrote on Instagram.