The heart works as a dual action pump – two pumps that work at the same time to pump blood in two different directions. The right-hand side of the heart collects deoxygenated blood from the body ...

Even if a person has had a heart attack before, the symptoms could be different if they have another. Some people also say they experience a sense of tightness that can feel like they are “being ...

She’d also like to know more about the individual differences between how different humans and animals react to an increased heart rate, which could also inform how anxiety disorders are treated.