Amy Robach made sure that she didn't let the snow get in the way of her fitness regime at the start of the week.The Good Morning America star took to Instagram on Monday to share a stunning post-workout selfie following a session at her local gym in New York.MORE: Good Morning America's hosts' homes are another level: Amy Robach, Robin Roberts, moreThe TV star looked incredible in a black workout top and displayed her toned abs as she posed for the picture.What's more, Amy revealed to her social