Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to train a hamster to run through tunnels [title] Allow a new hamster time to adjust to its environment. [step] Let a new hamster settle into its home and get comfortable. Forcing your pet to perform a new activity, such as running through a tunnel, when it's still getting used to your house may cause your pet stress.

Ending1: Make sure that you wait until after your pet has had its first few hours of sleep to begin and fix the problem. [substeps] If your hamster has not adjusted to the new environment, make sure that you provide a bed. Ending2: [title] Provide your hamster with a cat or dog friendly subfloor floor bed. [step] Making sure your hamster can rest in its subfloor can be another way to ensure it is comfortable and free from stress. Ending3: Make sure to give your new hamster at least a week to adjust to its new surroundings. [substeps] This amount of time helps your pet settle into its new surroundings, since it generally runs around the tunnel multiple times before changes to normal running behavior affects it. Ending4: If your pet is stretching its limbs, that is a good sign that it's feeling relaxed. [substeps] Anytime after the first week when your hamster appears settled is a great time to begin training.

Answer format: ending1/ending2/ending3/ending4