We’ve all sported the odd black and blue mark from a knock, but for some of us, the slightest bump seems to result in a multi-coloured extravaganza, which might last as long as several weeks.
Other people might find they bruise a lot, even if the bruises themselves are not spectacular, but they cannot recall the impacts that would explain the marks.
So why do some people bruise more easily than others? And can it mean something sinister?