Atrial fibrillation is a condition that causes a
rapid and irregular heartbeat. The normal heart rate lies between 60 and 100 beats per minute.
An electric fan cools you down in extreme heat, but not if you're old.
Sex can often be a pleasurable experience. But it also has benefits some reports have compared to those of exercise. So can sex really count as a workout?
The risk of developing an irregular heartbeat was 41% higher among those who were grieving a partner's loss than among those who hadn't experienced such loss. And this could last up to a year.
A new study looking at a long-lived lemur species attributes it to their frequent hibernation-like state. But what lessons can humans learn from this?
When people are in love, their hearts beat for each other, or at least at the same rate, according to a new study. When couples…