Cold Outside

Baby It's Cold Outside.  Really cold.  Really, really cold.  Four weeks ago I ran a trail marathon in shorts.  Tomorrow I have a 5K and I will be lucky if the temperature hits positive numbers.  I googled "Is it safe to run in the cold".  After reading several articles I concluded it is safe if you wear proper clothing and don't go too fast.  I am planning to run.  I will re-access in the morning.