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The toe-tap test and more ways to save your brain

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Romantic love, a glimpse of Brad Pitt on the big screen, winning the lottery ... plenty of good things can make your heart skip a beat. But the erratic palpitations of a seriously off-beat ticker are worth avoiding, because they spell big trouble for (surprise!) your brain. Yes, your brain. Here's how it happens. Out-of-rhythm heartbeats, called atrial fibrillation (AF or Afib for short), make...

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