Is This Real? Polio Survivor’s Dead Muscles Just Woke Up!

A polio survivor who hadn’t moved her leg muscles in decades picked up the phone two days after a single therapy session and said one sentence: “Something is happening in my legs.” Her daughter — once stuck in airport wheelchairs, now walking the entire length of the Denver airport alone and playing pickleball — had told her it might. What’s actually going on inside the human body when a lifetime of atrophy reverses in 48 hours?
Is this real?