Dwayne “The Rock” Johnson has just shared another look at the day he spent training with L.A. Rams defensive tackle Aaron Donald in a new Instagram video, focusing in particular on a set of core-torching ab wheel rollouts. Both men perform this move in a series of rapid, impressively synced-up movements, but it’s important to remember that form is everything with this exercise, and that it is a test of your hip st… Click below to read the full story from Men’s Health
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