In general, women are still the primary parent, and they still do more household chores, which involves both physical work and a whole lot of mental work remembering appointments, planning meals, getting the paperwork in on time.

FORBES: Success Secrets Of The World's Most Powerful Women

"Most people are free of the mental and physical burdens of work on a Sunday and experience a more stressful change from weekend leisure activities to work activities on Mondays, " said Dr Shuogo Murakami, who led the research.

BBC: Returning to work involves a stressful shift from leisure

Making his case, the Anglican archbishop argued that schools now emphasised students' spiritual dimensions, and said hospital chaplains' work addressed spiritual issues, as well as the physical and mental.

BBC: Archbishop calls for NHS bill to cover spiritual health

Each man knows that the other is a true adversary, and there is mental muscle, not just physical daring, at work on their private common ground.

NEWYORKER: The Fugitive

Department official Tony Murphy explained how the work capability assessment process was a "wide ranging" test consisting of 10 physical and seven mental, cognitive and intellectual descriptors.

BBC: Social Development Committee