Retail stores and retail store services provided on-line, through catalogs, through interactive television, through infomercials, and by direct solicitation by sales agents, involving products which make computer operation more healthy, more productive, and more enjoyable, including furniture, accessories such as footrests, wrist rests and armrests; systems for lighting, air filtration, and sound; phone headset systems; computer equipment such as keyboards, mice, monitors, computers, software; and training programs teaching people how to use the above.