Run Game Practice

Sleep and social energy: why tired nights go worse

6 min read

If you've ever dragged yourself out on four hours of sleep, you already know how it goes. Conversations feel like work. Your jokes land a beat late. You leave early and call it a "bad night" when the problem was Tuesday and Wednesday.

Sleep won't turn you into someone else, and there's no study showing that eight hours makes people better at approaching strangers. What exists is a small amount of lab research on how sleep loss changes the way people act around others and the way others see them. It's worth knowing, as long as you know how far it stretches.

What adults are advised to get

The CDC says adults aged 18 to 60 need 7 or more hours of sleep a day. That's a general recommendation, and individual needs vary. One rough self-check: if you sleep in by two or three hours on every day off, you may be running short during the week.

What two studies found

Both of these were small and took place in labs. Neither involved dating, and the sleep loss was heavier than a late Friday.

Sleep loss and how others see your face. In a 2017 study in Royal Society Open Science, Sundelin and colleagues photographed 25 healthy adults (mean age about 24) after two nights of 8 hours in bed and after two nights of 4 hours in bed. 122 members of the public, who didn't know the purpose, rated the photos. People in the sleep-restricted photos were rated as less appealing to socialize with, less attractive, less healthy and sleepier. Trustworthiness ratings didn't change. The authors say the effects were small, the photos were of strangers with no context, and real conversations weren't tested.

Sleep loss and distance. In a 2018 study in Nature Communications, Ben Simon and Walker tested 18 young adults (aged 18 to 24) once after a normal night and once after 24 hours without sleep. After the sleepless night, people kept greater distance from someone approaching them, and brain scans showed more activity in a network linked to protecting personal space. In an online part of the study, 138 people who kept a sleep log reported more loneliness the day after nights of lower sleep efficiency. That part is a correlation, based on their own logs. In another online part, judges who watched short video clips rated the sleep-deprived participants as lonelier and less desirable to interact with. The lab sample was small and young, and the authors note they didn't measure whether people wanted less contact or just acted that way.

What to take from that, stated carefully: in these samples, sleep loss changed how people behaved around others and how strangers rated them, in small ways. It doesn't tell you that your conversations will go badly or that people will turn you down because you're tired. It's a reason to treat sleep as part of preparation, the way you'd treat a shower.

Why tired nights go worse, in practical terms

Some of this is research, and some is just what people report, so read the second half as common experience.

A routine for the week before

You don't need a complicated system. The CDC's tips for better sleep are a good base: keep consistent bed and wake times, keep your bedroom quiet, relaxing and cool, turn off electronic devices at least 30 minutes before bed, avoid large meals and alcohol before bedtime, avoid caffeine in the afternoon or evening, and exercise regularly.

Here's how that can look in practice. It's a rule of thumb, so adjust it to your life.

  1. Pick a wake time you can keep seven days a week, then count back 7.5 to 8 hours for bedtime. Stay within about 30 minutes of it, including weekends.
  2. Set a caffeine cutoff. Many people choose early afternoon. If you drink coffee at 5 p.m. and sleep badly, test the cutoff for a week and see what changes.
  3. Put the phone out of reach of your bed. An alarm clock or a phone across the room works. Scrolling in bed is the quickest way to lose an hour.
  4. Train earlier in the day if you can. A beginner workout plan three days a week is enough to start, and the CDC lists regular exercise among its sleep tips.
  5. Keep a 20-minute wind-down. Lights low, shower, a book or music, nothing that requires decisions.

The day of a night out

When you're already tired

Some nights you're tired and you still want to go. A few honest options:

If you're regularly exhausted despite getting 7 or more hours, snoring loudly, or you can't fall asleep for weeks, mention it to a doctor. It could be a sleep problem that's treatable.

After the night

A late night doesn't have to ruin the next day. Wake within an hour or two of your usual time, get daylight and a real breakfast, and go to bed at your normal time that night instead of "catching up" with a nap that runs until dinner.

If you want to track this, add one line to your notes after a night out: hours slept the night before, energy from 1 to 10 when you left, and how many conversations you had. After a month you'll have your own numbers instead of the studies'. In Run Game, session notes are a place to keep that line next to your logged approaches.

What to do next

  1. Set a wake time you can hold seven days a week starting tomorrow, and work out your bedtime 7.5 to 8 hours earlier.
  2. Choose a caffeine cutoff (early afternoon is a common one) and keep it for seven days.
  3. Move your phone charger away from your bed and start a 20-minute wind-down tonight.
  4. Before your next night out, write down how many hours you slept last night and your energy from 1 to 10 when you leave.
  5. Set a small goal for that night, such as two real conversations, and a time to be home.
  6. After three nights out, compare your notes. See whether better-slept nights felt easier. Judge by your own numbers, not by what anyone else's study says.

If you want more to do before you walk in the door, how to not be awkward talking to girls is a good next read.

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