12. Chris Gronkowski—Former NFL Fullback Turned Shark Tank Entrepreneur

Chris Gronkowski, one of the famous football Gronkowski brothers, turned to a startup after finishing his NFL career. That led him to Shark Tank, where he did a deal with Mark Cuban and A-Rod. Hear his incredible story of success at two of the toughest gigs in the world. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers