PT Nerissa Peach demonstrates this simple yet effective ab exercise.
Begin by standing up straight with your feet shoulder-width apart.
Hold a kettlebell in your right hand with your palms in.
Keeping your back straight, bend to the right as far as you can, then return to the start position.
After finishing your desired reps, change the weight to your other hand and repeat on the opposite side. Remember to bend only at your waist.
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