Natalie Coughlin, a 12-time Olympic medalist in swimming, could be wrapping up her spectacular career at the Rio Games. 

The 33-year-old is tied with Jenny Thompson and Dara Torres for the most all-time medals by a female American swimmer. 

Rio will be her fourth Olympic Games appearance. 

Coughlin said after the London Games didn’t go as well as planned, she completely changed her training dynamics. 

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