A Tokyo Women's Medical University study claims that blood pressure is higher on Monday morning than any other day.
It may explain why the stress of going back to work puts the cardiovascular system under increased pressure.
Dr Shuogo Murakami, who led the research said;
“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.
“There was a distinct peak on Mondays in this study”.