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 ...

Y our heart beats about 100,000 times a day. Sometimes it beats faster and sometimes more slowly, depending on what you're doing and whether, for instance, you're all worked up about something.

A fast heartbeat of over 100 beats per minute can happen for various reasons, including drug reactions, alcohol, stress, and some health conditions. If the cause is unclear, the heart may seem to ...

Most causes for waking up with a racing heart aren't serious. ... The increased amount of blood in the body during pregnancy can cause your heart to beat 10 to 20 beats per minute faster than usual.

Olivia Cheung, who was 19 when her heart stopped beating for 63 minutes, shares experiences to educate public about intensive care treatments.