(CNN)In the absence of a wedding ring, there may be another way to determine someone's marital status: the speed at which they walk.
According to a study published Wednesday in the journal PLOS One, married people have better physical and mental health at older ages than unmarried people. Specifically, they walk faster and have a stronger grip.
Led by Natasha Wood from University College London's Institute of Education, researchers looked into the association between marital status and the ability to carry out everyday tasks in later life.
"There's been a lot of other research which has shown that married people are healthier and have lower rates of mortality but very little research which has looked at physical capability," Wood said.