For every high-risk, adrenaline-seeking lifestyle, there are ten thousand high-risk injuries that might happen.

Photo by Mike Warren
You??re in an out-of-the-way corner of Japan, enjoying a mid-morning ride on a cheaply purchased mountain bike, viewing a landscape that only so many places can offer.
A smoking volcano to the left, and a revolving sushi restaurant on the right, not yet open for the lunch crowd.