Michelle Obama looked incredible in a new workout photo posted on social media this week – and she received quite the reaction!READ: Michelle Obama reveals daughter Sasha's unique living situationThe former FLOTUS took to Instagram on Wednesday to mark National Walking Day, to share a picture of herself taking a stroll by the beach.In the image, Michelle was dressed in blue leggings and a co-ordinating workout top, displaying her toned physique. VIDEO: Michelle Obama opens up about daughters