Animals have a natural ability to listen to their bodies and follow their instincts, which helps them maintain a balanced and healthy lifestyle. They live in harmony with nature's rhythms and don't have the same level of stress and distractions that humans often face. Additionally, animals typically engage in physical activity throughout the day, which helps them release built-up energy and tension, leading to better quality sleep. As a result, they are able to rest deeply and peacefully without the interference of the type of cognitive and emotional factors that can disrupt human sleep patterns.