You've felt this dizziness before. The heart palpitations. Maybe chest pains. Shortness of breath. It comes and goes but when it comes, you know it because you feel it. You're not completely sure what's behind it. You've never been diagnosed with any heart issues. Or maybe you have but this... this is different. If these symptoms continue, you should get with your doctor to check it out. Of course, just like visiting a mechanic when your car is making a noise, when you get there... nothing happens. You're fine. Ticking like a clock.