Let’s get one thing straight: Muscle is muscle. Despite what many fitness influencers may have you believe, there’s no such thing as "lean muscle" or "bulk muscle." It’s all made from the same stuff.

Voluntary muscles can be controlled by the person, like muscles in your neck and legs. Involuntary muscles work without you thinking about it, like your heart and stomach muscles. Skeletal muscles ...

Muscle knots can develop for a number of reasons—maybe work has you stressed out, poor desk posture has you hunched over, or that last gym session didn’t go well. Muscle knot causes aside, there’s no ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. A muscle strain, or a pulled muscle, is among the most common injuries affecting people of all ages, particularly those engaging in ...

The mirror doesn’t lie, but sometimes it doesn’t tell the full story either. That slight softening around your midsection or the newfound difficulty opening stubborn jars might seem like inevitable ...

When you think about muscles, you probably think about the ones in your arms, legs, back or abs. However, muscles do far more than move the body. A muscle is a type of tissue, a group of cells that ...

That nagging shoulder twinge or persistent knee pain might not be random bad luck—it could be the direct result of muscle imbalances silently developing in your body. While most fitness enthusiasts ...

Traditional bodybuilding advice has been to push workouts to the point of failure, and that soreness is an indicator of effectiveness. But recent studies show there’s another way Until pretty recently ...

The more we move, the more our muscle cells begin to make a memory of that exercise. MIT Technology Review Explains: Let our writers untangle the complex, messy world of technology to help you ...