Sleep is an important aspect in maintaining the body's circadian rhythm. In general getting fewer than 5 hours sleep per day has been associated with cardiovascular problems, diabetes and obesity and can also be linked to depression and anxiety. Poor sleep is a common complaint among people with rheumatoid arthritis (RA) with disturbed sleep and fatigue known to affect up to 70% in this population. Poor sleep quality may contribute to the feelings of pain, fatigue and poor psychological well-being which in turn may further deteriorate functional ability and reduced activity.