A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...

“Listen, I’ve got to call you back,” the 48-year-old man said to his client when the now-familiar but still-terrifying feeling started. He felt dizzy and lightheaded, as if he were about to faint. He ...

It’s normal to experience occasional heart palpitations due to stress, exercise, and excessive caffeine or stimulants. Write down what you were doing before your heart started racing. This record can ...

While heart palpitations can be "startling and very unsettling," a Georgia-based heart surgeon assures that they are very rarely dangerous or life-threatening. Be still your heart — we’re heading into ...

You know the feeling. When you first see your crush and your head starts spinning, your palms get sweaty, and your heart begins beating a mile a minute. Is this love? Or is it … an arrhythmia? The ...

MIT researchers can measure someone's pulse just by watching them on video. The new method, which picks up slight head movements, could help detect cardiac events. Crave freelancer Tim Hornyak is the ...