Over 30 million computers are used in the US, and prolonged daily computer use can cause health issues. Workers who use computers for 6-8 hours per day may experience fatigue, pain, stiffness, eye strain, headaches, and loss of productivity. The various components of a computer workstation, such as the chair, desk, and monitor, should be adjustable to accommodate each user's needs and tasks in order to reduce discomfort. Common issues include the head being positioned too far forward or back, arms not being supported, and poor back support from the chair. Adjusting components can help correct issues and maintain neutral postures.