The reflexes of the eye are automatic adjustments your eyes make to help you see and keep them from being damaged. They can respond to light and dark, adjusting how much light enters the retina.

Your reflexes aren't the problem. Science shows gaming after 30 costs you maybe 100ms—less than a bad monitor. Here's what actually matters.

We’re always looking for ways to stay active, and this head-mounted boxing ball definitely makes the list. You can test your reflexes and train without the help of large equipment or classes. Pick one ...