What is a sleeper?

A 'Sleeper' typically refers to a person whose main job is to sleep, often for research or product testing purposes. Sleepers may participate in sleep studies at research institutions, where scientists observe and collect data on their sleep patterns to understand sleep disorders or the effects of certain conditions. They can also be hired by companies to test mattresses, bedding, or sleep-related products and provide feedback on comfort and quality. Sleepers need to meet specific health criteria and follow study protocols, making the job unique but important for advancements in sleep science and product development.