When many people talk about working the core, they’re mostly talking about their abs. However, the broad definition of the core muscles includes: Training your core is more than just ab training, and ...

This autoimmune disorder affects how well your nerves and muscles communicate, leading to a variety of symptoms. Myasthenia gravis (MG) is a chronic autoimmune condition that affects signaling between ...

Joint pain and weakness can be caused by a number of conditions, including acute injuries, infections, and chronic diseases. The outlook depends on the underlying cause. Share on Pinterest Getty ...