Yes, cats consume energy during estrus. Cats are very uncomfortable emotionally and physically during estrus, and estrus will last for 5-7 days. Most cats will have a loss of appetite and lack of energy during and after estrus. , It shows that it loves to sleep. This is normal and the owner does not need to worry. After a cat is in estrus, its owner needs to prepare meat, canned food and other nutritious foods to replenish the cat’s energy.