Kbands Training Flex2Fit Workouts: Use this resistance bands superset to increase your heart rate and increase strength in your core. This superset utilizes our Kbands and KB PowerBands to give you results fast. You can use our resistance bands as a superset while you workout at the gym, or at your house. Be sure to find the right level of resistance bands to find failure reps with the rep ranges I suggest in the video. Good luck training and please comment below if you have any questions. .