Have you heard of fast-twitch and slow-twitch muscle fibers? These are the two types of muscle that are responsible for all your gains in the gym. And depending on how you train — and even your own ...

How are those muscles doing today? We all know that as the years go by, our bodies go through changes. Some are super obvious ...

The chest press is one of the "big five" and is an effective basic exercise for muscle building Photo: Getty Images/Westend61 A muscular, athletic body radiates health and vitality. But how can you ...

Muscular endurance tests can help you gauge the effectiveness of your workout and provide clues about your overall physical fitness. When it comes to measuring progress in the weight room, muscular ...

For fitness-minded folks, muscle testing can sound pretty intriguing. But it turns out that it has little to do with fitness...or even muscles. On a basic level, muscle testing looks at a muscle and ...

A team of researchers has developed a simple lab-based system for growing human muscle cells that are capable of vigorously contracting. A team of researchers at Tohoku University have developed a ...

The lunge is a popular, versatile exercise for strengthening the lower body. It works many muscles in one move and offers numerous benefits. Varying your technique emphasizes different muscles or ...

A muscular, athletic body radiates health and vitality. But how can you really build muscle effectively? FITBOOK takes a closer look at the five most important exercises and shows you how you can ...