Amy Robach is exhaling a sigh of relief. The Good Morning America host marked her first step towards recovery after a recent painful injury with a celebratory post on Instagram.MORE: Amy Robach looks sensational as she takes to the stage in new birthday photosThe star's latest selfie is from a gym, featuring Amy walking for the first time – slowly – on a treadmill after a "wicked calf strain." She explained she injured herself last week after jumping for her toddler.While Amy said she's "never been happier" to be able to walk again, she admitted it is not quite the workout she is used to nor where she hopes to be in her recovery. WATCH: Amy Robach is surprised backstage by David MuirMORE: Amy Robach leaves David Muir baffled in hilarious backstage videoThe television host also shared a video of her on the treadmill, which she adorned with a gif that read "taking it slow." "Still days away from a run," said Amy, explaining that for now, the most she has been able to do is one and a half miles at a 2.2 pace.