Foot cramps happen when muscle fibers or muscles in the feet contract involuntarily. People with this condition often feel their muscles knot up or tighten suddenly for several seconds to
Lactic acid, also known as lactate, can be the result of metabolism. It is produced when there is a lack of oxygen in the body. The substance can build up
Fibromyalgia, FM, is a condition attributed with localized tenderness, extreme tiredness, and widespread pain. The cause of this condition remains unknown, but studies have shown that genetics may be one
Fibromyalgia is a disorder associated with widespread pain accompanied by sleep, reduced cognitive functioning, fatigue, and mood issues. Studies have shown that fibromyalgia affects the way the brain senses these