Luckily, my falling techniques that I learned from Judo saved my neck.
Personally, my ukemi story starts with me and my friend's mountain biking in the forests of Hawaii as a young man. While biking, I hit a tree root going at quite a fast speed (I was younger and less wise). My bike stopped cold in its tracks. However, my body was not stopped. I went flying over the handlebars and I ended up performing a forward roll out of pure instinct. Luckily, my falling techniques that I learned from Judo saved my neck. Literally.