You might think you know what it feels like to have sore, tight muscles. But, sometimes, what feels like a muscle ache is actually a more complex problem — one that's related to nerves. "It's much ...

MIT scientists find that motor neuron growth increased significantly over 5 days in response to biochemical (left) and mechanical (right) signals related to exercise. The green ball represents cluster ...

Regular activity not only strengthens muscles but can bolster our bones, blood vessels, and immune system. MIT engineers have now found that exercise can also have benefits at the level of individual ...

Experts now better understand the causes of different types of chronic pain. Here's what to know about the treatments that can bring relief. By Meeri Kim Almost everyone has pain sometimes. It might ...

DEAR MAYO CLINIC: My daughter has myasthenia gravis. She had a thymectomy, but wasn’t helped. What is the latest treatment for this disease? Is there any relationship to female hormones? Myasthenia ...

If exercise feels harder than it should, chronic stress may be working against you. Learn how to regulate your physiology so your body can support your fitness goals.

Occasional leg cramps are considered common and usually harmless, especially after physical exertion, dehydration, or ...

Exercise can have benefits at the level of neurons, through chemical and mechanical effects, researchers find. The discovery could inform exercise-related therapies for repairing damaged and ...