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How to exercise your puppy
Let your pup explore the backyard.
For puppies under 12-18 months of age, self-directed play will fulfill your puppy's exercise needs. In other words, the majority of your puppy's exercise should be exploring, digging, and free play.
Therefore, let your puppy roam around your backyard, or an enclosed grassy area that is safe. While your puppy is exploring, supervise your puppy to ensure that it is safe at all times.