Ikiwa umeshindwa simama kwa mguu mmoja kwa sekunde 20 ni dariri ya kua na hatari ya uwezekano wa kuugua ugonjwa wa kupooza (stroke) katika siku zijazo za maisha yako. If you can′t stand for one leg for more than 20 seconds, it could be a sign that you′re at risk of a stroke later in life, new study reveal.