Premium ContentWOW - Workouts of the week WOW – 20:40 KB-Only Circuit By CoachDos - November 5, 2018 1587 FacebookTwitterPinterestWhatsApp Heavy MRT circuits are possibly the BEST protocol to gain fitness, power, strength, and lose fat. Today I use a KB-only 20:40 to put myself thru a brutal MRT circuit! DO WORK! Post Comments comments