ThinkGeek offers the Marvel Iron Man 3 LED Arc Reactor Ring for $9.99 plus around $6 for shipping. That's $40 off list and the lowest total price we could find for any Repulsor Technology-based ring. It comes in sizes 8 to 12, and features LEDs that glow for 60 seconds when tapped.
Exercising in the right way can "significantly" improve brain function for folks over age 50, new research shows. Here's the skinny.