Hills are optional. Wind is not. I like hills, but when I'm too tired for them I avoid them. Don't really have that option with wind.
I don't think I even remember what a tailwind feels like. All wind here seems to be either headwind or crosswind.
Originally Posted by
merlinextraligh
The other half is a matter of vectors. Because you're moving forward, for most wind speed and most riding speeds, any crosswind is an effective headwind.
Thus, at least two thirds of wind directions are effective headwinds
This.