A laptop and a hotel room is many people's modern-day office, and even students are getting into the fray with school-sponsored notebooks. But while convenient and powerful, they're also a potential danger for people who don't take the time to learn good usage habits. Smaller keyboards can mean sore fingers, and monitors that won't move independently from the keyboard mean that you're often forced to choose between an aching neck or aching wrists. Add cell phones and PDAs to the mix, and it's a repetitive stress injury just waiting to happen. But with just a few precautions, you can help limit your risk and learn the principles of ergonomic computing. Welcome to HealthyComputing.com's™ Mobile Ergonomics Site!