Jennifer Garner has dazzled her fans after sharing an incredible video of her time in quarantine ahead of shooting for her upcoming film, The Adam Project.The Alias star posted the clip to Instagram on Thursday – and it's seriously impressive!MORE: Jennifer Garner dons sky high heels while standing on roof for announcement With Adele's Hello playing in the background, Jennifer and her friend stand in front of a roaring fire as they perform almost circus-like skills with an exercise ball.WATCH: