Chest, Back & Shoulders is part of Cathe‘s Xtrain series. For more info on the series as a program see My Intro to Xtrain. Chest, Back & Shoulders is 51 minute split series strength workout; 5 minute warm up, 42 minute training time and 4 minute stretch. This workout also includes Bonus Core #1 and … Continue reading Xtrain: Chest, Back and Shoulders