> Even if your the only person on a closed smooth track, you can get a pretty bad TBI injury if you crash. Yeah, or in my experience on the W&OD bike trail (la

> Even if your the only person on a closed smooth track, you can get a pretty bad TBI injury if you crash. Yeah, or in my experience on the W&OD bike trail (largely just people on bikes), you can easily hit a rock or a deer and go sideways. It's more likely to break a collar bone than hit your head, but it's probably smart to have a helmet on.