All runners, according to a popular school of training thought, can be divided into two categories: slow-twitch and fast-twitch. Physiologically, this idea rests on pretty shaky ground. The old view ...

The trillions of microbes living in the human gut are increasingly recognized as important partners in human health.

Researchers developed a high-sensitivity proteomics method to analyze individual human muscle fibers. The technique ...

A muscle fiber consists of just one cell, but many nuclei. A team has now shown just how varied these nuclei are. The study can help us better understand muscle diseases such as Duchenne muscular ...

Exercising regularly is one of the best defenses against metabolic diseases, such as obesity and diabetes—but why? It's a question that scientists are still struggling to answer. While exercising ...

Most fitness-minded people have probably heard of fast- and slow-twitch muscle fibers. However, the distinction can be somewhat mysterious, especially in the context of understanding how it relates to ...

It's well known that spaceflight causes muscle atrophy and other biological changes in reduced gravity, and especially in ...

Lab-grown or cultured meat could revolutionize food production, providing a greener, more sustainable, more ethical alternative to large-scale meat production. But getting lab-grown meat from the ...