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Primo Boost Keto After a few seconds, straighten your shoulders, focus on the heels. Perform 10 times, 3 sets. Exercise with an expander. Get on your knees, fasten an expander on your feet (for example, a band). Extend the leg so that the toe looks down and the leg is higher than the hips. Strain in the process of the abdominal muscles, and keep the buttocks stationary. Return the foot to the starting position. Repeat on the left foot 10 times, then do the same on the right.
