Exercise is important to ALL dogs, unless there is some physical problem of course.
We own a Malamute, we had him from 8.5 weeks old. He is now 2 years and 8 months. I started to walk him at 14 weeks (had to wait for the second injection). About a walk around the block I started with. And gradually increase. It depends on the dog. Some dogs at a young age have a lot of energy. We socialised him from a young age, in the parks or in puppy school. Your dog will show you when he is tired.
How old is your pup?