The dog sat on her and disturbed her workout routine
Training at home comes with its issues. For example, many distractions can arise and make your workout less efficient. And of course, when you are working out in a public space, everybody knows to leave you alone.
At home, on the other hand, you are usually only a door away from those who live with you, including your pets. The worst part is that dogs and cats do not really understand boundaries and will not realize that they are disturbing you.