Imagine how it would be to live your life, work, interact with people, read, watch TV, travel or do anything else, without thoughts and worries claiming your attention.

Debra Ronca, a contributor to the How Stuff Works website, argues that some parents might be putting the cart before the horse in blaming close-up TV watching for their child's vision issues.

Watching TV or playing computer games for long periods damages your heart, regardless of how much you exercise, say scientists.