A racing heart is usually a sign of agitation or excitement. But if it's not unusual for your heart to beat too fast or to skip a beat, it might be worth having it checked out by a doctor. In order to ...

He states, ‘A higher heart rate could signal a risk of heart disease and also provide insight into your physical condition. Meanwhile, a lower resting heart rate suggests that you're in better ...

Most major geological events in Earth's recent history have clustered in 27.5-million-year intervals — a pattern that ...