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 ...

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 ...

Speed training with resistance focuses on improving sequencing, not brute force. The weighted vest adds load that forces efficient movement. Fast-twitch muscles engage more aggressively. When the vest ...