Cats are naturally cold-blooded animals and they need to conserve heat. Sleeping on you is a great way for them to stay warm, especially during the winter months.
Cats feel safe and secure when they are close to their owners. Sleeping on you is a way for them to feel protected and loved.
Cats show affection in many ways, and sleeping on you is one of them. When your cat sleeps on you, they are essentially saying "I love you" and "I feel safe with you."
Cats are very particular about their comfort and they will often choose to sleep on soft, warm surfaces.
When your cat sleeps on you, it is a way for them to bond with you and strengthen their relationship.
Cats have scent glands in their cheeks and paws and they will often rub against you to mark their territory. This is a way of saying "this is my human" to other cats.
In rare cases, a cat may sleep on you excessively because they have a medical condition, such as hyperthyroidism.