stroke
Researchers hope this will help doctors better understand who is at risk.
'We recommend that people drink water on a regular basis.'
It puts you at greater risk of heart disease and stroke.
'The quicker you act the more of the person you save.'
It's been a mystery, until now...
He's had two more strokes since.
But don't get too excited.
It doesn't have to mean hitting the gym.
'I just thought I had pulled a muscle.'