No matter how healthy their lifestyles sooner or later most people have some experience of muscular aches and pains: it could be a pulled muscle or ligament due to accidental injury, the wear and tear of osteoarthritis or even that new ill of the 20th century, repetitive strain injury. Or it could be a less localised problem — a systemic disorder such as rheumatoid arthritis or, more commonly, a nagging backache which seems to have no obvious cause. (more…)