Astronaut marks first triathlon in space

The CNN Fit Nation Lucky 7 get major props for finishing the Nautica Malibu Triathlon this weekend, and so does NASA astronaut Sunita Williams.

Williams did the swimming, biking and running events aboard the International Space Station using exercise equipment specialized for space. This makes her the first person ever to complete a triathlon in space.

“I’m happy to be done," she said after finishing her activities. "It wasn’t easy, and I’m sure everyone out in California is excited to be done, too.”

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