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21Stop Playing Tennis And Horseback Riding

Serena Williams won the Australian Open when she was pregnant — but that was in the first trimester. Doctors recommend that moms-to-be stop playing high impact sports like tennis and softball by the second trimester.

Other sports like horseback riding and skiing could also be dangerous because a fall could happen

and the baby could be harmed or the placenta could detach. It's time for mom to be extra careful, and she might have to give up her favorite sport for a little while.

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