Caitlin sits down with the v v funny comedian, artist, actor and writer Julia Johns to talk about how fun a chill gym routine can be. We discuss why some of us just aren't cut out for team sports, how to take care of your knees when you run, and all of the truly terrifying things that you'll be forced to do if you ever do a 'tough mudder.'

Find more of Julia on her website www.juliajohns.com, or on the 'gram and twitter @heyjuliajohns.