The 11-year-old world-championship Reebok CrossFit Games come to the Alliant Energy Center Thursday through Sunday.

Visitors can watch some 640 hard-core, hard-bodied athletes from 31 countries in action and up close, and can participate in their own fitness experience: The games also offer music, a vast vendor village with competitions and shopping, free workout areas and the chance to try some of the same challenges that the top CrossFit athletes take on.

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