Dr. Subhasree Ray on Twitter: "5-minute plank. In addition to the core, this exercise helps in strengthening the muscles in your back, chest, arms, thighs, and shoulders. Implement in phases. https://t.co/qURugpGAvT" /
5 Best Plank Variations For Abs & Core Strength | Men's Fitness UK
5 Plank Variations to Strengthen Your Core - The Balanced Berry
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5 Minute PLANK CHALLENGE | Follow Along Workout - YouTube