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2 minute plank challenge with background music. - YouTube
Two Minute Plank Workout
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M on Twitter: "Update on plank challenge: I managed up to one minute by the skin of my teeth while making noises like a cow giving birth and just couldn't get any
Do The Plank For 2 Minutes Every Day And You'll Reap Amazing Rewards
This Full-Body Plank Workout Takes Just 5 Minutes to Do | SELF
Jillian Michaels - I'm starting this Monday! Should we do together via Facebook live? Like if your down! #jillianmichaelsapp http://go.jillianmichaels.com/app | Facebook
