When a female cat or a male cat is in estrus, her sleep and diet will be reduced due to the influence of her mood and mood. After she is in estrus, she will need to sleep to replenish energy due to excessive physical exertion. If this happens, the owner does not need to worry. You can prepare some food for your pet to help replenish your pet's energy. The cat will return to normal after waiting for 2-3 days.