Parenting charities and Mumsnet users warn Canadian report’s advice risks becoming ‘a stick to beat mums with’, as UK experts urge caution

Childbirth groups have reacted angrily to advice that new mothers should take two hours of exercise a week and avoid using screens before bedtime in the three months after their baby’s birth.

Mumsnet, the social network, said that the recommendations – which also include daily pelvic-floor exercises – “seem wildly optimistic about what looking after a newborn entails”.