How to feel like you got a good night’s sleep, even when you didn’t
By Martin Ebner
Updated September 2026
Let’s get one thing straight. You can’t fake sleep. A cold shower, a strong coffee and an impressive amount of determination may make you feel more awake, but they don’t turn four hours into eight.
Sometimes life has other plans, though. Work runs late, a flight leaves at a ridiculous hour, somebody starts drilling outside your window, or your brain decides that 3am is the perfect time to revisit every decision you’ve made since 2006.
The goal the next day isn’t to pretend nothing happened. It’s to function sensibly, make a good decision about training and avoid turning one rough night into several.
ONE BAD NIGHT ISN’T A DISASTER
Most adults are advised to get roughly seven to nine hours of sleep a night, although individual needs differ. People training hard may need more, which is one reason the sleep recommendations for athletes focus on the individual rather than prescribing one perfect number.
One poor night doesn’t erase the work you’ve already done, but it can change what makes sense today.
The first question is whether you’re merely tired or genuinely struggling to function. If you’re fighting to stay awake, drifting off unintentionally or don’t feel safe driving, caffeine and positive thinking aren’t a workaround. Rest comes first.
If this is happening regularly, or you’re spending enough time in bed but still waking exhausted, speak to your GP. Loud snoring, gasping during sleep, persistent insomnia and heavy daytime sleepiness deserve more than another coffee.
WHAT POOR SLEEP DOES TO YOUR TRAINING
Sleep loss doesn’t affect every person or every type of exercise equally. You may still be capable of producing strength after one short night, particularly earlier in the day, while finding endurance, coordination, decision-making and repeated hard efforts noticeably worse.
A large systematic review and meta-analysis found an overall decline in physical performance after acute sleep loss, with the effects becoming more consistent later in the day. That doesn’t mean your own workout will be predictably worse by a neat percentage. The results varied enormously, but poor sleep is clearly a real performance variable rather than a character test.
Effort can also feel harder than it usually does. That matters because a weight you could physically lift may not be a weight you can control as well as usual. If the session involves heavy technical lifts, fast reactions or anything where a small mistake has consequences, be conservative.
DECIDE WHETHER TODAY’S SESSION STILL MAKES SENSE
Start with the purpose of the workout. An ordinary strength session gives you room to adjust. A personal best attempt, a brutal interval session or a highly technical workout gives you far less.
Then warm up and pay attention. If your coordination is good, the usual loads move normally and you feel better after ten minutes, continue with a sensible version of the plan. If everything still feels slow, unstable and disproportionately hard, move the session or take the day off.
My guide to deciding whether you need a rest day goes into this in more detail. The important bit is that missing or changing one workout won’t ruin your progress. Forcing a poor session just to protect an unbroken streak isn’t discipline, it’s admin.
IF YOU TRAIN, CHANGE THE JOB
A bad night doesn’t automatically mean doing nothing. It may mean keeping the exercises familiar, leaving two or three repetitions in reserve and cutting a few of the hard sets.
I’d also avoid turning today into the day you learn a complicated new lift or test your absolute maximum. A decent personalised training plan should have enough flexibility to absorb one imperfect day without falling apart.
Keep the session focused and judge it as you go. If you feel better, fine. If your technique deteriorates or the effort keeps climbing, stop early and put your energy into recovering properly.
USE CAFFEINE WITHOUT STEALING FROM TONIGHT
Caffeine can improve alertness, attention and several types of performance after sleep loss. That makes a morning coffee perfectly reasonable. It doesn’t make caffeine a replacement for sleep.
Use enough to help, not enough to frighten the furniture. More isn’t automatically better, especially if it brings jitters, an upset stomach or a racing heart. Your tolerance, body size and usual intake all matter.
The trap is chasing tiredness with caffeine all day, then being unable to sleep again that night. Keep it earlier than usual and leave a generous gap before bed. The exact cut-off depends on the person, but if caffeine regularly affects your sleep, your own evidence is already fairly convincing.
LIGHT, FOOD AND WATER HELP. MIRACLES DO NOT
Get outside into daylight after waking if you can. Bright morning light helps signal that the day has started and often improves alertness more reliably than sitting in a dim room staring angrily at your laptop.
Drink water because dehydration can make a poor morning feel worse, not because a glass of water “kick-starts” your metabolism. Eat proper meals with protein, carbohydrates, fruit or vegetables rather than trying to survive on coffee and whatever appeared beside it.
A cold shower may wake you up for a while if you enjoy that sort of thing. It hasn’t replaced the missing sleep, and neither has vitamin C, a huge breakfast or a supplement sold with a picture of somebody looking suspiciously energetic.
A NAP MAY BE THE BEST TOOL AVAILABLE
If your day allows it, a nap can improve alertness and may help physical and cognitive performance after partial sleep loss. A short nap of around 20 to 30 minutes is the simplest option when you need to get moving again without too much grogginess.
Research in athletes and physically active adults has also found benefits from naps between 30 and 60 minutes. Longer naps can leave you feeling temporarily worse when you wake, so give yourself time to clear the sleep inertia before training, driving or doing anything important.
Try not to push the nap too close to bedtime. The point is to take the edge off today without making tonight more difficult.
PROTECT THE NEXT NIGHT
This is where you actually recover. Give yourself a proper opportunity to sleep, keep the room cool and dark, and put the phone somewhere that doesn’t require a negotiation every six minutes.
Avoid using alcohol as a sleep aid. It may make you feel sleepy, but that isn’t the same as getting better-quality sleep. I’d also avoid trying to force an absurdly early bedtime if you’re wide awake. Start winding down earlier, then return to a routine you can repeat.
If you’re considering a sleep supplement, I’ve reviewed Performance Lab Sleep separately, including what’s in it and what it can reasonably do. A supplement may be an add-on, but it doesn’t outrank enough time in bed and a routine that works.
The wider principles are the same ones I use in my guide to recovering after exercise. You’re giving the body the time, fuel and conditions it needs, then getting out of its way.
WHEN IT’S MORE THAN A ROUGH NIGHT
Occasional poor sleep is part of being human. Persistent poor sleep is different, particularly if it’s affecting your mood, work, training or ability to stay awake during the day.
Don’t try to diagnose the cause from an article. Stress, medication, sleep apnoea, restless legs, discomfort and several medical conditions can all disturb sleep. If the pattern continues, speak to your GP or an appropriately qualified sleep professional.
YOU CAN REDUCE THE DAMAGE. YOU CAN’T REPLACE THE SLEEP
After one bad night, use daylight, food, water, sensible caffeine and perhaps a nap to make the day more manageable. Train if the session still makes sense, adjust it if necessary, and rest if you’re not functioning properly.
None of that turns poor sleep into good sleep. It simply stops one difficult night from taking control of the next day as well.
The internet is very good at turning tiredness into a supplement stack or a moral failure. Check It Oot is where I write about the far more useful bit in the middle. One or two emails a month, written by me, and nothing you need to read at 5am after pretending four hours was enough.
