The weighted ab workout targets your core in just four exercises
The first exercise is the weighted Russian twist, which targets your obliques
The second exercise is the weighted sit-up, which targets your upper abs
The third exercise is the weighted leg raise, which targets your lower abs
The fourth exercise is the weighted plank, which targets your entire core
The workout can be done with a dumbbell or a medicine ball
The story recommends doing three sets of 10-12 reps for each exercise