Professor Guy Leschziner

If you've got very little sleep reactivity, you may actually...

If you've got very little sleep reactivity, you may actually...

Yeah, but the sun comes up at different times on different days, firstly. So if you were doing that routinely, you might find yourself really rather sleep deprived in the summer months. And also there is some emerging evidence that exposure to light at night in your sleep is not very good for you.

Yeah, but the sun comes up at different times on different days, firstly. So if you were doing that routinely, you might find yourself really rather sleep deprived in the summer months. And also there is some emerging evidence that exposure to light at night in your sleep is not very good for you.

So there was a very recent study that implied that light exposure at night increases your risk of diabetes. So, it certainly is not good for the quality of your sleep, and the likelihood is that you won't wake up as soon as it's light. You'll wake up an hour or so after it's got light, but during that hour or so, it may have had a negative impact on the quality of your sleep.

So there was a very recent study that implied that light exposure at night increases your risk of diabetes. So, it certainly is not good for the quality of your sleep, and the likelihood is that you won't wake up as soon as it's light. You'll wake up an hour or so after it's got light, but during that hour or so, it may have had a negative impact on the quality of your sleep.

So, having a dark bedroom is really part of good sleep hygiene, as is having a quiet bedroom that is not too hot or too cold.

So, having a dark bedroom is really part of good sleep hygiene, as is having a quiet bedroom that is not too hot or too cold.

Yes, it does. I mean, I wear a sleep mask. I think it's particularly if you don't have good blackout curtains or blinds in your bedroom, using a sleep mask, particularly in the summer months, is probably very helpful indeed.

Yes, it does. I mean, I wear a sleep mask. I think it's particularly if you don't have good blackout curtains or blinds in your bedroom, using a sleep mask, particularly in the summer months, is probably very helpful indeed.

Well, I think that there were some rumours on the internet that there were light receptors elsewhere, but certainly the only ones that we know to be of significance in terms of defining our circadian rhythm are the ones in our retinas.

Well, I think that there were some rumours on the internet that there were light receptors elsewhere, but certainly the only ones that we know to be of significance in terms of defining our circadian rhythm are the ones in our retinas.