Bryan Johnson Prioritizes Sleep Quality Over Partner Co-Sleeping

Biohacker Bryan Johnson, known for his extreme longevity regimen, has revealed that he and his girlfriend of nearly four years, Kate Tolo, sleep in separate beds and homes. Johnson explained in a social media video that this arrangement is a deliberate choice to maximize sleep quality, a critical component of his pursuit of extended lifespan.

Johnson, the founder of the longevity startup Blueprint, stated that he has never shared a bed with Tolo. He elaborated on X, formerly Twitter, that their shared intimacy in bed is limited to sex. His rationale centers on the belief that sleeping with a partner can lead to sleep disruptions, which he links to accelerated biological aging. He cited a 2020 study involving 55 couples, where participants reportedly woke up approximately six times per night due to their partners.

However, Johnson acknowledged that the scientific consensus on co-sleeping is not uniform. He pointed to a different study of 12 heterosexual couples that found sleeping together increased rapid eye movement (REM) sleep by 10% and led to better synchronization of sleep stages between partners. Data also suggests gender-based differences, with women experiencing poorer sleep when sharing a bed with a man, while men tend to sleep better with a partner. Despite these variations, a 2022 survey of 1,000 adult couples indicated that those who slept together reported better overall sleep, less insomnia, reduced fatigue, and improved mental health.

Johnson concluded that happier and healthier individuals might be more inclined to share beds. He also noted that some couples find that separate sleeping arrangements have strengthened their relationships. Kelsey Thompson, for example, shared that her relationship with her husband has thrived with their dual-bedroom setup, which includes two full primary bedrooms.

A 2023 survey by the American Academy of Sleep Medicine found that 35% of Americans consistently or occasionally sleep in a separate room from their partner. This trend, often referred to as a "sleep divorce," has led sleep experts, therapists, and even hotels to accommodate couples seeking improved rest without compromising their romantic connection. Harvard Health has also published guidance for couples considering separate sleeping arrangements, with many reporting enhanced sleep quality and decreased tension.

Ultimately, Johnson stated that the decision to sleep together or separately depends on the couple. "For some couples, sleeping together improves sleep," he said. "For others, separate beds might save your sleep or your relationship. Possibly both."