Double unders and Nonsense by Reece Killebrew | Mar 10, 2020 | conditioning | 0 comments conditioningDouble unders and Nonsense by Reece Killebrew | Mar 10, 2020 | 0 comments50-40-30-20-10Double UndersAir squatsPushups Ab Mat situps Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *CommentName * Email * Website Save my name, email, and website in this browser for the next time I comment.Please enter an answer in digits:5 × 2 =