Share this postComing in January 2023feelthebyrn.substack.comCopy linkFacebookEmailNoteOtherComing in January 2023Gordo ByrnNov 29, 202212Share this postComing in January 2023feelthebyrn.substack.comCopy linkFacebookEmailNoteOtherShareThis is Endurance Essentials, the digital version of Gordo Byrn’s book on Endurance TrainingSubscribe