Using a computer mouse may not seem dangerous, but potentially wrist-driven actions repeated thousands and thousands of times have the potential to cause carpal tunnel syndrome. If you are the type to use a computer heavily, you face both a high risk for injury and the greatest impact should injury occur. Thankfully, there are some steps you can take.
Search engine optimization may not seem like a matter of website health, but through my years as an optimizer, I can assure you that it is. Some websites seem clearly healthy, and others, clearly sick.