Cassie Fight Cystic Fibrosis with CrossFit® Post navigation Previous Previous post: Life is Short- What are you doing about it?Next Next post: A Inner Dialogue with Myself – 2 Hours on The Assault Bike Radix Member Cassie Cardwell talks about her life with Cystic Fibrosis and how she thought she couldn’t do CrossFit and how she’s over some that! Check out her story here!