How long can you stand on one leg? Can you manage it for 20 seconds or even longer? Then your brain is probably still in good shape.
Scientists of the Tokyo University asked 1,300 men and women with an average age of 67 to stand on one leg with their eyes open. Those who had difficulty remaining standing for 20 consecutive seconds (about a third of the test group), had a lower score on cognitive tests.
That risk-group has a higher risk of hemorraeghes and problems with little capillaries in the brain, which are closely connected to strokes.
Yasuharu Tabara, the scientist who led the study, writes that "standing on one leg is a simple way to detect instability. That instability can be the result of problems in the brain".