Dr. Matthew Walker

Yeah, there's some really great research on this. Pioneer in this field is Wendy Troxell, wrote a great book. And what we find is that if you survey people and you ask, do you sleep in the same bed together? One out of four people will say that they do not sleep in the same bed.

And if you then survey them anonymously, because there's such a stigma associated with not sleeping together, about one in three couples will say, I wake up in a different location. than this bed that I went to sleep in with my partner. So in other words, they got up during the night and they just went and they got on the couch. I'm sick.

And if you then survey them anonymously, because there's such a stigma associated with not sleeping together, about one in three couples will say, I wake up in a different location. than this bed that I went to sleep in with my partner. So in other words, they got up during the night and they just went and they got on the couch. I'm sick.

And if you then survey them anonymously, because there's such a stigma associated with not sleeping together, about one in three couples will say, I wake up in a different location. than this bed that I went to sleep in with my partner. So in other words, they got up during the night and they just went and they got on the couch. I'm sick.

And I'm not suggesting again here that it is a one size fits all. It's absolutely not. Some couples can sleep together and they sleep really well and they have a preference for that. What's interesting though, is that if you measure them objectively,

And I'm not suggesting again here that it is a one size fits all. It's absolutely not. Some couples can sleep together and they sleep really well and they have a preference for that. What's interesting though, is that if you measure them objectively,

And I'm not suggesting again here that it is a one size fits all. It's absolutely not. Some couples can sleep together and they sleep really well and they have a preference for that. What's interesting though, is that if you measure them objectively,

you always see that when couples sleep together versus when couples sleep separately, their sleep is always objectively, as we measure it with sleep trackers or polysomnography in the laboratory, it's always worse when they're sleeping together on average than when they're sleeping separately. However, If you ask them subjectively, what do you think of your sleep?

you always see that when couples sleep together versus when couples sleep separately, their sleep is always objectively, as we measure it with sleep trackers or polysomnography in the laboratory, it's always worse when they're sleeping together on average than when they're sleeping separately. However, If you ask them subjectively, what do you think of your sleep?

you always see that when couples sleep together versus when couples sleep separately, their sleep is always objectively, as we measure it with sleep trackers or polysomnography in the laboratory, it's always worse when they're sleeping together on average than when they're sleeping separately. However, If you ask them subjectively, what do you think of your sleep?

They'll say, well, about half of them will say, I actually feel my sleep is much better quality when I'm sleeping with my partner versus when I'm not. Some of that has to do with perhaps the societal bias that they think they have to cleave to. Others, it's about safety. That they just feel safer. Others, it's just more intimate.

They'll say, well, about half of them will say, I actually feel my sleep is much better quality when I'm sleeping with my partner versus when I'm not. Some of that has to do with perhaps the societal bias that they think they have to cleave to. Others, it's about safety. That they just feel safer. Others, it's just more intimate.

They'll say, well, about half of them will say, I actually feel my sleep is much better quality when I'm sleeping with my partner versus when I'm not. Some of that has to do with perhaps the societal bias that they think they have to cleave to. Others, it's about safety. That they just feel safer. Others, it's just more intimate.

But what we have definitely found is that if you start to undersleep a male, if you short sleep them, and if you look at the average data, they could be in bed, let's say, seven hours. With a partner, they could be down to around five and a half hours because of the sleep disruption.

But what we have definitely found is that if you start to undersleep a male, if you short sleep them, and if you look at the average data, they could be in bed, let's say, seven hours. With a partner, they could be down to around five and a half hours because of the sleep disruption.

But what we have definitely found is that if you start to undersleep a male, if you short sleep them, and if you look at the average data, they could be in bed, let's say, seven hours. With a partner, they could be down to around five and a half hours because of the sleep disruption.

If you put a male, healthy male in their 20s on five hours of sleep for five nights, they have a level of testosterone of someone who's 10 years older than them. So, and you see equivalent impairments in female reproductive health, follicular stimulating hormone, luteinizing hormone, progesterone,

If you put a male, healthy male in their 20s on five hours of sleep for five nights, they have a level of testosterone of someone who's 10 years older than them. So, and you see equivalent impairments in female reproductive health, follicular stimulating hormone, luteinizing hormone, progesterone,

If you put a male, healthy male in their 20s on five hours of sleep for five nights, they have a level of testosterone of someone who's 10 years older than them. So, and you see equivalent impairments in female reproductive health, follicular stimulating hormone, luteinizing hormone, progesterone,

These are all critical sex hormones that promote superior libido drive, and it also promotes superior sensation and sexual pleasure during the act of intimacy. So firstly, when you're underslept, and again, this is not a one size fits all, but for those that it's not working for, the stigma in society is that if you're not sleeping together, you're not sleeping together. Mm-hmm.