To build strength for long-term health, certified personal trainer JJ Virgin advises simulating your daily activities in the gym through squats and other exercises, performing workouts that engage ...

What's the first thing that comes to mind when you think about the words twitch and muscle? Spasms, perhaps. You'd hardly be alone in thinking that. But when it comes to fitness, it's most commonly ...

Different types of exercise encourage the formation of different types of muscle fibers, or the cells that make up your muscles. Slow twitch muscle fibers support endurance activities like ...