Every person walking, sleeping, or sitting still right now depends on a muscle that contracts roughly 100,000 times before ...

This is an article from Curious Kids, a series for children of all ages. The Conversation is asking young people to send in questions they’d like an expert to answer. All questions are welcome: find ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

The heart is a muscle like no other, beating 60 to 100 times per minute on average, around the clock. But when it grows weak, it can lead to serious problems: from debilitating shortness of breath and ...

When a muscle contracts, the parts of a sarcomere "shorten" and come closer together. Each cardiac muscle cell can have over 5,000 sarcomeres, which compounds both the shortening and relaxation events ...

In a new research report, a team of scientists led by Johns Hopkins Medicine say people with severe obesity and a common type of heart failure experience weakened heart muscles, and that losing weight ...

For the first time, scientists have succeeded in artificially mimicking the ion signaling of heart muscle cells. To succeed, ...

The next time you train, remember: You’re not just building endurance. You’re upgrading your heart's software. You're ...