The secret to big arms? It relies on many factors: genetic makeup, workout frequency and more. These elements determine the time it takes to get big biceps.

Can Gut Bacteria Make You Stronger? How your microbiome might be the secret to better performance When most athletes think about building strength, the focus is ...

There are several key components to building long, lean muscle, starting with striking the right balance of strength training sets/reps and burning excess fat.

When you run, jump or pick up something heavy, that work tells your muscle cells to get bigger. That’s because each muscle cell is made of proteins called myofilaments.

Researchers studied whether muscle size is indeed a good predictor of strength and how changes in muscle size relate to ...

If you've ever wondered why specific exercises feel way tougher even when the weight isn't massive, science has some answers. It all comes down to how your body ...

Along with a bigger, stronger chest, shirt-straining arms and perfectly carved six-pack abs, most guys want their leg muscles to really pop. Contrary to what you might think, building bigger legs ...

Is it safe to lift weights daily? How often should you lift for weight loss or muscle? Personal trainers suggest this weightlifting schedule for better health.