When your heart beats too fast, too slow, or skips irregularly, it is called arrhythmia. Skipping a Beat If your heart’s ever skipped a beat, you’ve had what are called heart palpitations .

If you notice your heart skips a beat, your doctor may want to test your mineral levels. “We try to correct what we believe to be the responsible mechanism,” he says.

In the rats, the heart tattoo could correct an irregular beat by sending pulses of electricity to the organ, the team reports. The tattoos sandwich a transparent layer of graphene between sheets ...

Your heart beats about 100,000 times in one day and about 35 million times in a year. During an average lifetime, the human heart will beat more than 2.5 billion times.