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.

Love sports? Get the latest sent daily to your inbox