It's a legal requirement to wear a helmet when cycling -- so wear it right. If your helmet doesn't fit properly, you can end up with a preventable injury.
Photo by John Brooks
In a recent Consumer Reports survey, 10% of adult bike riders at an event in New York City were wearing their helmets like the kid in this picture: pushed way back on their heads, exposing their foreheads. That doesn't protect the front of your head, and it usually means your straps are also too loose (20% of adults at the event had loose straps). There should only be about two fingers of space between your eyebrows and the helmet.
So fix your helmets already -- and if you have kids, check their helmets out too. Kids' helmets are even more likely than adults' to fit badly. I know, it's hard to get the right fit on a squirmy child, especially when they feign choking noises as you snug up the strap. Suck it up, kids, and you'll live to squirm another day.