Hey! I have a 4 1/2 month old GSD, and i was wondering if it's to soon to start jogging with her? I've tried jogging short distances just to see how she reacts, and she seems to like it. I was wondering if it's ok to up the distance? Im pretty sure she will be able to keep up, she's faster then me lol, however i heard it might be bad for her joints. Is this true?