Cardio Killer By Angie | January 26, 2018 - 1:23 pm |January 26, 2018 Abs, Cardio, Online BC Workouts This is going to be a tough, but great cardio workout! You will do 10 reps the first round, 15 reps the second round and 20 reps the 3rd round! One round might seem like enough, but I challenge you to do at LEAST 2 rounds! 😉 Click to Print! Click to Print Like this:Like Loading... Tagged abs, cardio, fat burning. Bookmark the permalink.