Dr Longo takes on the Birkie! (American Birkiebiener) By Dr LongoApril 2, 2015January 27, 2022 Categories: Benefits, Your Health Tags: birkie, exercise, skiing, winter activities Dr Longo takes on the Birkie! (American Birkiebiener) [hr]It was an buttocks kicker!!! The distance is 51k which is about 32 miles. It’s the largest… Read more