A heart-lung machine takes over the work of the heart and lungs during surgeries. It oxygenates and circulates blood when a person's heart or lungs can't work properly. While essential, using a ...

Get pumped up — it's time to show off your knowledge about the heart. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Your heart pumps blood from ...

Rowing machines and treadmills do not challenge your cardiovascular system in the same way, so what is the science behind it? When you purchase through links on our site, we may earn an affiliate ...