Feel Confident as Hell at the Beach With 5 Flat-Ab Moves

This lower-ab toning move also "sculpts your obliques and shoulders."

• Begin standing with your arms stacked in front of you and parallel to the ground.
• Engage your core and twist your upper body as you raise your right knee up to meet your left elbow.
• Lower back down. Repeat on the opposite side.
• Complete 15 reps on each side, 30 reps total.