He started training in martial arts in 1974, but cancer almost forced him out of the ring. In this extended interview, Nelson talks with KARE 11 about the origins of mixed martial arts fighting and how the sport has changed over the years. Welcome to the KARE 11 News YouTube channel. Subscribe to our channel for compelling and dramatic storytelling, award-winning investigations, breaking news and information you can use. Text your photos, videos and news tips to 763-797-7215. » Subscribe to KARE 11 on YouTube: https://www.youtube.com/user/KARE11?sub_confirmation=1 » Watch more KARE 11 video: https://www.youtube.com/user/KARE11/v... » Visit KARE11.com: http://www.kare11.com/ » Download our app! https://www.kare11.com/appredirect/ » Find KARE 11 on Facebook: https://www.facebook.com/KARE11/ » Follow KARE 11 on Twitter: https://twitter.com/kare11 » Follow KARE 11 on Instagram: https://www.instagram.com/kare11/