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S1E22 Up in Arms
Season 1, Episode 22 • 33m
How do your arms twist, lift, and pull?
Up Next in Season 1
S1E23 Skeletons in the Closet
What bones can tell us about family history.
S1E24 Are Birds Dinosaurs?
Are tiny T. rexes raiding your bird feeder?
S1E25 The Knees Have It
Could you run without your patella?