Exercise and the Rest
My husband and I adopted a beautiful East German pup from a breeder last August. He is just about five months old and I just started to jog lightly with him twice a day, for about twenty minutes in the morning before work and then another half hour or so when I get home. Within the jog I incoropate some play time when I chase him around/and or play fetch (make sure to teach your dog fetch). My husband plays with him more after I leave for work. Along with training (5-20 minutes everyday, tricks, obedience, hide and seek, etc..), I would say we plan for a solid 2 hours of dog time everyday. And I mean solid time with dog....that does include your own exercise time, though, if that is a plus.
This is my first GSD, and I don't know how his exercise needs will change but I assume I will have to adjust more as he grows and needs more intense exercise. We have introduced him to the bike just a little bit and plan to incorporate biking riding into his exercise routine, along with fetch.
His breeder said that walks along with 15-20 minutes of intense fetch everyday should do it, but so far it is a little more intensive than that. I imagine it might get less as the dog grows older. We'll see! It is a working dog, so we were prepared to care for him.
I was sick with a cold last week and he did get a little nuts when I couldn't exercise him as well as I usually did.