Your 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. So ...

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 ...

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

For the first time, surgeons have successfully performed a remarkable new heart transplant in which the donor organ never skips a beat in the process, reducing the damage that can occur during such a ...

The boy had been diagnosed with strep A , which caused his body to go into sepsis and led to cardiac arrest Kimberlee Speakman is a digital writer at PEOPLE. She has been working at PEOPLE since 2022.

The simple, constant rhythm of a beating heart is a reassuring sign of life. With each lub-dub, blood brings life-sustaining oxygen throughout the body. But behind this steady beat is a busy ...

For the first time ever, surgeons at National Taiwan University Hospital (NTUH) successfully performed a heart transplant in which the donor organ never stopped beating. This revolutionary procedure ...

Researchers discover that heart cells in developing zebrafish start beating suddenly and all at once Becoming a full-fledged organism out of a handful of cells, complete with functioning tissues and ...