I second this. A car pulled out in front of me once - I went over the handlebars, landed on my hip and my head whiplashed onto the tarmac. If I hadn't had my he

I second this. A car pulled out in front of me once - I went over the handlebars, landed on my hip and my head whiplashed onto the tarmac. If I hadn't had my helmet on it's very likely that I would have fractured my skull, including all of the attendant risks of serious brain injury.