I felt breathless (more than normal) up the hills in 27-31 degrees today. I don't know what's wrong with me. I Have had panic attacks in the past though, so maybe my whole system is delicate. I found it harder to breathe with a scarf around my neck. I'm so glad it rarely gets below 25 here, but it was picture perfect today and the roads were virtually empty today because everyone was scared about the ice.