Originally Posted by
FBinNY
If the wind was fierce, we'd start out with a folded newspaper covering our chest, and when (or if) we warmed up we'd discard it. I still use the throwaway newspaper method if I'm not sure how warm I need to dress.
The park newsletter available at the summit of Mt. Diablo has come in handy a couple times for sticking under the front of my jersey before starting the descent (no problem staying warm on the way up).