Why Are Hamster Aactive. Hamsters are nocturnal, which means they snooze in the day and get taste of the action at night. These tend to be associated with harsh winters, when there are low temperatures, short day lengths, and a lack of food.
It was nothing you did or didn't do. Many hamsters feel lethargic and stop eating when they don’t feel well. To provide your hamster with an active and healthy life, make sure that it is constancy stimulated with games and cage toys.