Roger says to pre-run track, street, or trails before you start to go fast.
Well, I didn't do that yesterday.
I was out riding the dirt bike and a buddies a quad.
Make a long story short, I flipped the quad off a 10 foot cliff.
I have a second degree burn on my back and some nasty braises on the back of my legs and neck, where the quad landed on me..
Lesson learned, always listen to Roger when it comes down to riding bikes or a any of road vehicle.