> If you want protection from injury on your bicycle, you are better off with a motorcycle helmet than a bicycle helmet, end of story. Remember that protection

> If you want protection from injury on your bicycle, you are better off with a motorcycle helmet than a bicycle helmet, end of story. Remember that protection is a balancing act. You are reducing the already low chance of catastrophic injury. However, in exchange for that, you are increasing your weight, drag, reducing your ventilation, giving yourself helmet hair, increasing the sweat your head is bathed in at the end of the ride, etc. Tossing a motorcycle helmet in may reduce your risk of injury even further, but remember, catastrophic crashes are relatively rare, they can kill you in many other ways than simple head injury, and a motorcycle helmet is way too heavy, hot, and unventilated for riding a bike, as well as restricting your vision and hearing and thus probably making it more likely for you to be involved in a crash. I would be very surprised if motorcycle helmets actually made you safer once you took all of this, as well as the effect of suppressing your desire to ride due to the discomfort and inconvenience (thus losing the benefits of the exercise it provides), into account.