Swimmer Siblings: Alex & Gretchen Walsh Take on the Sibling Challenge!

They train together, race together… but how well do they really know each other? 👀

Alex and Gretchen Walsh take on the Sibling Challenge: in and out of the pool! Who’s more calm under pressure? Who spends more time on TikTok? Who forgets their goggles more often?

Find out in this fun sister showdown 💥

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