 In just three weeks, we're starting to have conversations in Spanish. Gracias, Babbel. Babbel, language for life. Now try Babbel for free at Babbel.com. That's B-A-B-B-E-L.com. I'm Kareem Abdul-Jabbar. I learned about atrial fibrillation the hard way. My symptoms would come and go. Shortness of breath, fatigue. I kept going. Then I got so lightheaded, I couldn't. My doctor said I have AFib, so I'm about five times more likely to have a stroke.