Live

Watch CBSN Live

Preview: King of CrossFit

Sharyn Alfonsi profiles Greg Glassman, a brash, former gymnast who created the CrossFit workout, now the basis for a chain of gyms that has become the largest in history. Watch Alfonsi's report on Sunday, Aug. 27 at 7 p.m. ET/PT.
View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.