Add Yahoo as a preferred source to see more of our stories on Google. Seasoned marathon runners Amy Robach and T.J. Holmes stay fit by sweating every day. (Photo illustration: Nathalie Cruz/Yahoo News ...

There have been plenty of ups and downs throughout Amy Robach’s and T.J. Holmes’s lives — cancer, divorce, you name it. But one thing has been a consistent source of stability to each of them: ...