Bright Side said that about a third of all people can raise one eyebrow. This movement is possible because of the frontalis muscle, which lifts the brows and moves the scalp backward. When the ...

Unexplained muscle pain in the arms and legs may be the result of benign issues. Or it may point to a more serious underlying condition, such as fibromyalgia, infection, or thyroid issues.

Muscle growth is influenced by several key factors. Here are the top five that directly affect how quickly you can build muscle. Giselle Castro-Sloboda Fitness and Nutrition Writer I'm a Fitness ...

Supplements for muscle growth (often called "ergogenic aids") may be used to help you "bulk up," improve athletic performance, or minimize aging-related muscle loss. Some supplements, like collagen, ...

Your first instinct is to pull your head toward your shoulder, trying to lengthen your stiff, sore muscles. We’ve all been told stretching is a great way to keep your body loose and limber and ...

Myasthenia gravis is a chronic condition that causes muscles to tire and weaken easily. For example, if you have myasthenia gravis, you may notice that during a meal, your jaw muscles become tired ...

Ms. Barclay is the climate editor at Times Opinion. I was lying on my side at physical therapy, halfway through a set of leg raises to strengthen a butt muscle gone soft, when a therapist ...

The others are for moderate to severe glabellar lines associated with corrugator and/or procerus muscle activity ... forehead lines associated with frontalis activity.