Oblique Strength Posted on November 1, 2015March 26, 2019 by Sophie Side Planks- Level 1 Side Plank Raises-Level 2 Oblique Twist-Level 3 Blenders- Level 4 View this post on Instagram A post shared by Agatsu Fitness (@agatsufitness) on Aug 24, 2015 at 7:12am PDT This content is only available to members.