tag:blogger.com,1999:blog-8263880611302313019.post4756545751693329267..comments2023-12-11T03:30:19.036-05:00Comments on Shirtless Freedom: Vitamin D in the fallShirtless Robbiehttp://www.blogger.com/profile/11886776275888532185noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8263880611302313019.post-76364535025737517092010-11-01T15:35:37.993-04:002010-11-01T15:35:37.993-04:00I run all year round without a shirt, even when th...I run all year round without a shirt, even when the temperature dips well below freezing (0C) or it is snowing, for up to an hour. I don't think your example is extreme - people may think so but.... - as long as you are active and working your core temperature up you will be fine as long as you know your limits. 5 or 10 minutes exercising at freezing won't kill you nor give you Tremendihttps://www.blogger.com/profile/13818424579102960208noreply@blogger.com