Medically reviewed by Sanja Jelic, MD Key Takeaways The diaphragm is the main muscle used for breathing. The diaphragm helps ...

Medically reviewed by Monique Rainford, MD Key Takeaways The vagina is a muscular tube connecting the outside of the body to the uterus. The vagina expands and produces more lubrication when aroused.

Leaf through a textbook, watch a wellness influencer, or listen in at the gym, and it can feel as though the human body has ...

You have 3 different types of muscle: skeletal, smooth, and cardiac. Skeletal muscle alone accounts for over 650 different muscles. Have you ever wondered how many muscles you have in your body? The ...

Metabolic health is maintained through the complex interplay between key tissues, including adipose tissue, skeletal muscle, and the liver. Adipose tissue ...

The contraction process involves interactions between actin and myosin filaments within the sarcomeres to generate force. News organizations may use or redistribute this image, with proper attribution ...

Muscle knots are highly irritated muscle fibers that have tightened into a ball in one area of your muscle. These painful, tender spots can feel sore and often occur in your upper back, shoulders, or ...

A deep tissue massage targets deep layers of muscle and the surrounding tissues. People may choose this type of massage to treat sports injuries or chronic pain. In this article, we look at the ...