Amazon Halo fitness tracker measures ‘movement health,’ flexibility like a virtual trainer Health News Amazon Halo fitness tracker measures ‘movement health,’ flexibility like a virtual trainer Beatrice J. Doty June 4, 2021 Evercore ISI senior managing director Mark Mahaney argues Amazon’s stock will go to $4,500 because of strength... Read More Read more about Amazon Halo fitness tracker measures ‘movement health,’ flexibility like a virtual trainer