Cats are known to sleep most of their lives. They like being lazy and this is absolutely normal for purrs.
After nap time is over, cats eat, wash, or play. But there are some fluffers who continue to lie down even while awake.
Meet a kitty cat from Vietnam. He is very calm and chubby. He is almost always lying down. Even during walks in his special backpack, he continues to lie on his side

Just the mood for life: a chubby kitty lying on its side. Worth adopting his attitude to life! So relaxed. Why choose another position when you can just lie down?