Fitness phenomenon Crossfit has a cult-like following with more than 13,000 affiliated gyms around the world. Started by Greg Glassman in 2000, this colorful founder talks about never backing away from a fight and why bodies are his brand in this Learning from the Pros.Jan. 17, 2017
UP NEXT
Must see: Trump v. Biden in 21 charts
08:48
'Another stunning jobs report': Acting Labor Secretary lauds U.S. economic progress
02:58
Secretary Yellen: U.S. economy performing better than any advanced nation
05:50
Biden boosts Casey's bill on 'shrinkflation' with Snickers joke
00:59
‘Massive benefit’: Immigration surge set to boost U.S. economy by $7 trillion