After she delivered her daughter, Alexis Olympia, last September, Serena Williams was barely recognizable as one of the finest and toughest athletes.
After giving birth, Williams developed blood clots in her lungs that could have been deadly if she had not sensed something was wrong and insisted on an examination that discovered them. After several surgeries she spent six weeks in bed. She would get up once a day, walk outside to get the mail, return, and then sleep again.
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Article source: https://www.wsj.com/articles/serena-williams-isnt-done-winning-titles-1520438631