46 thoughts on “5-Minute Flat Belly Ab Workout | Class FitSugar”

  1. I love this workout! I've been doing it twice a week for a few months combined with my other workouts and I feel a lot stronger! I have back problems so it's super important for me to keep my core strong! Thank you! ❤️

  2. About the last exercise…I cant relly lift my knees that way without feeling pop in my hip(leg) joins..any idea how to remove that pop? i feel like i shouldnt do it since it pops like this

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