Women with fibromyalgia (group of common rheumatoid disorders (not involving the joints) characterized by achy pain, tenderness, and stiffness of muscles) seem to have less physical strength and endurance than healthy women, so they might benefit from an appropriate training programme, suggests a new study by Finnish researchers. Fibromyalgia, which is characterized by pain, fatigue and difficulty in sleeping, is most common to women after menopause.