German Pinschers are high-energy working dogs. They need a lot of daily activity, mental stimulation, and a job to do to be happy and healthy. Daily walks plus time to run, playtime, and other activity can be enough for this dog, but they will likely be up for more activity if you offer it to them.
They will love any opportunity to spend time being active with you. Thankfully, they are versatile and athletic dogs, so you can jump into a wide variety of activities once puppies finish growing and developing. In addition to standard activities like running, swimming, frisbee, hiking, etc., they are also great candidates for dog sports like agility, obedience, tracking, rally, and more.