San Francisco 49ers star tight end George Kittle's offseason mornings usually involve working out, and like many professional athletes, an extra energy boost is needed. Fast Twitch is his go-to ...

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 ...

Nearly 60 years after its creation, sports-oriented hydration beverage Gatorade is ramping up for entry into the caffeinated energy drinks category with the sub-brand Fast Twitch. What hasn’t changed ...

Welcome back to FTW’s Beverage of the Week series. Here, we mostly chronicle and review beers, but happily expand that scope to any beverage (or food) that pairs well with sports. Yes, even cookie ...

Ever wonder why some people seem to pack on muscle effortlessly while others spend months in the gym with little to show for it? Muscle growth isn't just about lifting weights -- it's a complex ...

Tsukuba, Japan—Muscle fibers, which constitute skeletal muscle, are classified into two main types: slow-twitch (Type I, red muscle) and fast-twitch (Type II, white muscle). Slow-twitch fibers are ...