Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to train a hyper dog [title] Exercise your dog before training. [step] There is nothing to be gained by trying to train your hyper dog without first giving it a chance to burn off some energy. The best time to try a training session is after he or she has exercised vigorously.

Ending1: This provides an opportunity for your dog to learn things he needs to work on, such as standing up, running, and jumping. [substeps] Also take your hyper dog for a walk before your training session. Ending2: Try running your dog around the yard, playing a game of fetch or giving your dog a brisk walk in order to burn off the nervous, unproductive energy that we call hyperactivity. [substeps] It's most likely that your dog won't be able to focus until it is physically pooped out. Ending3: Make sure your dog has things like water, a leash, an exercise wheel, and a trip ball in his or her room. [substeps] Early morning and later afternoon are good times. Ending4: Training helps stimulate a happy animal and increases his or her mood, giving the dog a boost that his or her temperament could not otherwise handle. [substeps] Do not start training your hyper dog after four or five days have passed since the last time the dog exercised.

Answer format: ending1/ending2/ending3/ending4