For most couples, sharing a bed is almost what feels natural. It is where the day ends, conversations trail off, and partners fall asleep next to each other. But Bryan Johnson has never considered it a requirement for a relationship. The tech entrepreneur and longevity enthusiast recently revealed that he and his girlfriend, Kate Tolo, have separate beds and even live in separate homes. His reasoning is less about romance and more about sleep. Johnson argues that protecting the quality of their sleep could ultimately be better for their health, and their relationship.