Three times this week people have made remarks like, "How can you ride when it's so cold?" One of them was a regular bike commuter. It was in the 30s and 40s and windy in D.C., but it wasn't even below freezing all week (I think). My standard response, "This is nothing. Wait until January." Today it was a 20-year-old male intern who expressed amazement (and I'm 65.) That makes the half-hour ride more than worth it.