Abdominals - Russian Twist (AKA Landmine 180's) - Supps R Us
Russian Twist - Full Video Tutorial & Exercise Guide
How to Do Russian Twists (Form & Benefits) - Steel Supplements
Best workouts to target certain parts of abs : r/coolguides
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Medicine Ball Russian Twist by John M. - Exercise How-to - Skimble
Twitter 上的 trin€:"To work on ur lower core ( v line) russian twist (pic1) and bicycles ( pic2) are ur best bet. For russian twist use a ball and do 4 sets