Sleep: the most ignored pillar of your life

We have so many commitments in so little time that cutting sleep feels like a fair trade. Sleep less to live more.

But the math doesn’t add up. Most adults need 7 to 9 hours a night, and sleeping less than that takes more focus, memory and patience away from the next day than the extra hours give back.

The problem is that sleep is usually underrated. It’s almost treated as wasted time. And that’s a curious way to think about something that has been with humanity since the very beginning.

I like to think of sleep as a strategic pause. It’s not just there to rest the body, it’s there to reorganize your energy, mood and attention. It’s that rare moment when the day finally ends.

How much sleep do you need? Balance matters

The mistake starts when this pause loses its balance. Sleeping too little comes at a price. Sleeping too much does too.

It’s natural to rest expecting to wake up with more energy the next day. When we neglect that, the impact shows up fast: worse focus, less patience, worse decisions.

People who want to change their lives, earn more money or grow at work know that, at certain moments, life asks for more. And sleep is almost always the first thing to be sacrificed.

The bill we don’t see

One of the best-known studies on this was done at the University of Pennsylvania. Researchers had volunteers sleep 4, 6 or 8 hours a night for two weeks and measured their attention every day. Those who slept 6 hours ended up performing about as badly as people who had gone one or two entire nights without sleep.¹

The trickiest part came afterwards. When asked how they felt, these volunteers said they were just a little sleepy. Their performance kept dropping day after day, but their sense of tiredness barely changed. That’s why so many people swear they “got used to” sleeping less. The body doesn’t get used to it, it just stops warning you.

Sleep also affects mood in a very concrete way. In a brain imaging experiment, people who stayed awake for one night showed a reaction about 60% stronger to negative images in the area linked to fear and irritation. At the same time, the part of the brain that usually puts the brakes on those reactions was talking to it less.² You know those days when any comment turns into a fight? Very often the explanation started the night before.

And balance works both ways. American sleep medicine associations recommend that adults sleep 7 hours or more per night.³ Meanwhile, a large review of more than a million people found higher health risks both in those who slept too little and in those who slept far beyond that.⁴ For people who sleep too much, the authors point out that the excess may be more of a sign that something isn’t right than the cause of the problem. If you sleep a lot and still wake up tired, it’s worth talking to a doctor.

Life’s pit stops: sleep as a strategy

Now I want you to picture a mountain climbing challenge that lasts seven days. The winner isn’t the person who keeps going nonstop, it’s the one who knows when to stop to sleep, eat and recover.

The longer the race, the more strategic the breaks become.

Sleep works like the pit stop of a Formula 1 car. It doesn’t win the race on its own, but without it, there’s no way to win.

Life is a long race. And the better your pit stops are, the better your results tend to be. Don’t underestimate such an important moment.

How do you sleep better? Making a good pit stop

The good news is that a better pit stop starts with small adjustments. The first one is your wake-up time. Keeping roughly the same time every day, weekends included, helps your internal clock understand when it’s time to switch off at night. Getting natural light first thing in the morning reinforces that message.

The second one is coffee. In one study, a dose of caffeine taken six hours before bed still stole more than an hour of sleep from participants, even though they didn’t notice the difference.⁵ That late-afternoon coffee might be sending you the bill in the middle of the night.

The third one is creating a wind-down instead of an abrupt shutdown. Nobody leaves a meeting, answers the last email and falls asleep two minutes later. Dimming the lights, keeping your phone away from the bed and repeating a small ritual (a shower, a book, a few pages of notes) tells your body that the day’s race is over.

Value your sleep

Good sleep changes the whole day. It’s when you reward yourself for the daily rush, and when your brain keeps working for you, organizing what you learned and calming what weighed on you. That’s why it’s part of life, not a break from it.

So here’s the question: if your sleep were your pit stop crew, would it be working for you or against you?

To fine-tune your pit stop, here are three more reads:

• Coffee isn’t fuel, it’s a very hardworking backup goalkeeper. Find out why it sometimes doesn’t work.
• Sleep and exercise go hand in hand, and here’s what moving does to your brain before it shows in the mirror.
• A short night fills the bucket faster, and here we explain why an anxious mind invents problems.

Editor’s note: We all have that friend who brags about sleeping 4 hours a night and thinks living on coffee and anxiety is a personality trait. Do their nervous system (and your patience) a favor and send them this article. Maybe tomorrow they’ll wake up making slightly better decisions.

Footnotes

1. Van Dongen, H. P. A., Maislin, G., Mullington, J. M. & Dinges, D. F. (2003). The cumulative cost of additional wakefulness: dose-response effects on neurobehavioral functions and sleep physiology from chronic sleep restriction and total sleep deprivation. Sleep, 26(2), 117-126. ↩ source

2. Yoo, S.-S., Gujar, N., Hu, P., Jolesz, F. A. & Walker, M. P. (2007). The human emotional brain without sleep: a prefrontal amygdala disconnect. Current Biology, 17(20), R877-R878. ↩ source

3. Watson, N. F. et al. (2015). Recommended amount of sleep for a healthy adult: a joint consensus statement of the American Academy of Sleep Medicine and Sleep Research Society. Sleep, 38(6), 843-844. ↩ source

4. Cappuccio, F. P., D’Elia, L., Strazzullo, P. & Miller, M. A. (2010). Sleep duration and all-cause mortality: a systematic review and meta-analysis of prospective studies. Sleep, 33(5), 585-592. ↩ source

5. Drake, C., Roehrs, T., Shambroom, J. & Roth, T. (2013). Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. Journal of Clinical Sleep Medicine, 9(11), 1195-1200. ↩ source