If you have insomnia, watching TV at night isn’t recommended. But by following these general guidelines, you could enjoy good sleep and some TV. Photo / Getty Images
Lisa Strauss, PhD, is a clinical psychologist in the Boston area. She specialises in sleep disorders.
OPINION
I’m a pretty good sleeper, but occasionally I have trouble falling asleep or staying asleep. Most nights I like to watch a movie or show on my laptop in bed for an hour or so. It helps me relax, but could it be hurting my sleep?
As a sleep psychologist, I love this question from a patient because there is so much more to it than meets the eye. As with almost all questions about sleep habits, the answer is: It depends.
If you have insomnia, the usual recommendation is not to watch TV in bed. There are at least five reasons for this advice.
Conditioning:
The modern bedroom is a media room, outfitted with laptops, phones, tablets, e-readers, TVs and smart speakers. These are in addition to our books, work papers, pets, kids, takeout containers, lotions, puzzles and piles of unfolded laundry.
But one of the best supported components of insomnia treatment, stimulus control therapy (SCT), proscribes all activity in bed except for sleep and sex. When we reserve the bed for sleep, bed is hypothesised to become a strong conditioned cue - a green light - for falling asleep.
SCT is also thought to encourage the formation of helpful associations between the bed and peaceful drowsiness while breaking harmful associations between the bed and anxious wakefulness.
Content:
There is no scientific consensus yet on the effect of screen content on adults’ sleep, but patients regularly tell me that certain programs stimulate emotions and thinking that interfere with their sleep. Shows can also be compelling enough to keep my patients watching beyond when they would otherwise be asleep.
Biological rhythm:
Late-night light conveys a false sunlight signal to the biological clock and suppresses the darkness hormone melatonin, effectively shifting our internal time zone westward.
Environmental intrusion:
Volume fluctuations and flashing lights from the TV can be jarring when we’re awake and can wake us up if we’ve fallen asleep. Light is also a stimulant. It doesn’t take much sound to disrupt sleep.
Risk of falling asleep prematurely:
Many of my exhausted patients collapse into bed shortly after work to watch TV. The TV lulls them to sleep early and then they can’t sustain sleep through the night because sleep drive, like any appetite, has its limits. Their sleep fragments, and they may lie awake for long periods in the middle of the night or wake too early.
Now let’s look at the other side of the coin. There are some good arguments in favor of watching TV in bed.
Conditioning:
What if TV in bed is itself a conditioned inducement to falling asleep? I’ve had more than one patient who stopped watching TV in bed because they heard they were not supposed to, and stopped being able to fall asleep. Many others confess that they rely on it.
Content:
Now that TV is on demand, we can carefully curate what we watch. A David Attenborough nature documentary is not Black Mirror, the modern-day Twilight Zone. Having something soothing to focus on (“cognitive refocusing”) can drown out our default thoughts. Some people contain their thoughts more effectively when they watch something than when they engage with other foci. To use nothing at all would leave them defenceless.
Companionship:
Loneliness is harmful to sleep. Stories and their characters can be our companions late at night.
Soothing sound:
Perhaps relatedly, a few of my patients like to listen to the TV at minimal volume to fall asleep. They are comforted by the drone of human voices the way others are comforted by rain sounds. Conceivably, “articulatory suppression” of thinking is at play.
Pleasure, rest and autonomy:
It can feel good to claim some time for oneself (or with a partner) in the comfort of our bed at the end of a long day attending to obligations and others’ needs. The content we choose caters to our unique longings and interests.
While there are no perfect compromises, here are some customised guidelines I might propose to patients with insomnia who want to enjoy good sleep and some TV in bed. These guidelines are not a substitute for individualised health care.
Conditioning:
Content:
Biological rhythm:
Environmental intrusion:
Falling asleep too early:
Companionship and soothing sound:
Pleasure, rest and autonomy:
I find that my patients appreciate the opportunity to adapt (within reasonable limits) standard sleep advice to their unique circumstances and needs. You might find that approach helpful, too.