Join the weight loss challenge: https://briansyuki.com/

This workout will set your metabolism on fire and melt the fat cells in your body.
It's not extreme in any weight. The exercises are not intense and you can use a light dumbbell. I used a 2kg one.
It's not a wise decision to postone this workout if you want a flat belly. Do it today! Have a good time while doing it. Smile with me and do the exercise with energy.
Enjoy the beginner flat belly workout with one dumbbell.