So for the last few months, Titan and I have made it mandatory to go on dailywalks – rain or shine (no more than an hour). Unfortunately, every other day, he is on a harness and a leash, and we are walking on the shoulder of the road, so there is no time for him to unleash and let loose. However, I do alternate our walks by going to our local school yard (every other day), where I can unleash him so that he can run as fast as he like. But my question to you is an hour of exercise good enough? I do not have a fenced in yard so leaving him out by himself is unquestionable. When I take him out to potty, I do allow him to run back and forth in are yard (supervised), but I even know that little time in the yard is not good enough for a GS to unwind, so that is why I am asking is a hour good enough. I tried putting him on a treadmill but that is definitely a no-go! Any advice would help?