A dog needs physical exercise to build muscles, strengthen the bones and develop fine motor skills. A healthy dog is also happier and most likely to live longer. Physical exercise is an excellent way to remove a lot of the mental stress that make your dog restless when alone, chewing on your shoes, barking at the door bell and so on.
You should, as much as possible, stay away from hard surfaces like asphalt when walking/exercising your dog. It is very tough on their joints and it only challenges a small amount of their muscles. Are you lucky enough to live close by a park or forest you should spend as much time there as possible. To a dog it’s close to heaven.
The rough terrain(puppy standard) forces the puppy to use all his muscles just to prevent him from falling. Hi is building strength much faster compared to a dog walking on asphalt only, and the soft surface works as a cushion preventing impact damage to joints and muscles. I prefer to let my dog go free so he can challenge the terrain at his own pace. Doing so he will soon start exploring the surroundings and build self esteem at the same time. You can hide treats or toys around the terrain to help him get started.
As a rule I have an imaginary limit(30 meters) as to how far he can go before I call him back or demanding his attention. This worked perfect with my last dog Otello and he never left the “safe zone” when running free. I’m not yet sure if this was just me being lucky with Otello or if it actually works, only time will tell. After only two weeks with Garm it looks promising. Every time he get to the limit, he stoppes and looks back to check on me before proceeding. That is all the time you need to connect to him so you can give a command. Be sure to give lots of praise when he make that connection with you.