A month after being released from the hospital, gymnastics icon Mary Lou Retton opened up on social media with a Thanksgiving post about her family and the serious health challenges she’s faced over the past year after a battle with a rare form of pneumonia landed her in the ICU. NBC’s Stephanie Gosk reports for TODAY. » Subscribe to TODAY: on.today.com/SubscribeToTODAY » Watch the latest from TODAY: bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: on.today.com/ReadTODAY Find TODAY on Facebook: on.today.com/LikeTODAY Follow TODAY on Twitter: on.today.com/FollowTODAY Follow TODAY on Instagram: http:...