Originally Posted by
toytech
in 38 years riding my worst bonks by far have been with retention due to not being clear of the bike.
I grew up on bmx bikes though flying through the air, landing wrong more often than not, so getting off the bike was more important than protecting your shins from pedal bite. I also ride single not fixed. (personal preference, I have ridden both ways) your results may vary

Imagine hopping over something or hitting a drop at speed and trying to keep your feet on the pedals while in the cranks are still spinning....