Sleep and Exercise: When to Work Out for Better Sleep
By Dozywave Team

The Science of Sleep and Exercise
Let’s talk about the fascinating relationship between sleep and exercise. It’s like a well-choreographed dance — when they’re in sync, everything just flows. A 2023 study in Sleep Medicine found that people who exercised regularly reported better sleep quality and less daytime fatigue. But it’s not just about the act of exercising; it’s also about when you do it.
Our bodies have this clever internal clock, known as the circadian rhythm, that dictates when we feel alert and when we feel sleepy. Exercise can help regulate this rhythm by influencing hormonal balances, particularly those related to stress and sleep. For instance, morning exercise can enhance the release of cortisol, waking you up and setting the tone for an energised day. Conversely, late-night workouts might increase adrenaline levels, which could mess with your sleep.
It’s important to realise that the timing of your workouts can make or break your sleep quality. I’ve found that a brisk walk or a gentle jog during the morning sets me up for a productive day and a restful night. But when I tried a late evening gym session, I ended up staring at the ceiling until the early hours. It turns out, I’m not alone — many find that working out too close to bedtime can be counterproductive.
Morning Workouts: A Wake-Up Call for Better Sleep
Morning workouts have garnered a bit of a reputation for being the holy grail of exercise timings, especially if sleep is on your mind. When you exercise in the morning, you’re effectively waking up your body and mind. It’s like flipping a switch that tells your system it’s time to start the day. A morning jog in the park can do wonders for clearing the cobwebs and setting a positive tone for the day.
Many people, myself included, find that morning exercise boosts mood significantly. The endorphin rush sets you up for the day ahead, and there’s something quite satisfying about having ticked off your workout before most people have even had their first cuppa. This can be especially helpful in our dreary UK winters when the lure of the duvet is strong. But the benefits aren’t just limited to feeling good — there’s evidence that it also helps regulate your sleep-wake cycle.
One thing to keep in mind, though, is that morning workouts should be balanced. If you push too hard, too early, it might lead to fatigue later in the day. I remember when I first started my morning routine, I overdid it and ended up needing a nap by noon (not ideal when you’ve got work to do!). Find a level that invigorates but doesn’t exhaust, and you’ll likely see your sleep improve as a result.
Afternoon Exercise: The Sweet Spot for Sleep
There’s a lovely window in the afternoon that might just be the sweet spot for exercise if sleep is your goal. Exercising between 1 pm and 4 pm can lead to a perfect blend of benefits. At this time, your body is naturally warmer, which can be advantageous physically. Muscles are more flexible, reducing the risk of injury, and your performance might peak.
Personally, I’ve found that a post-lunch workout can be a great way to combat that dreaded afternoon slump. Instead of reaching for another cup of tea, a quick spin on the bike or a swim can revitalise you. It acts as a reset button, helping you to maintain energy levels throughout the afternoon and into the evening. And the best part? It doesn’t interfere much with your bedtime, so you’re more likely to hit the hay at a reasonable hour.
Research backs this up, suggesting that exercising in the afternoon can improve sleep duration and quality. The body’s core temperature starts to drop in the evening, a process that prepares us for sleep. By exercising in the afternoon, you’re helping align your physiological processes with this natural decline, making it easier to nod off when the time comes. So, if mornings aren’t your thing, or if your schedule is tight, try shifting your workout to the afternoon and see if it makes a difference.
Evening Exercise: Timing is Everything
Evening exercise can be a bit of a double-edged sword when it comes to sleep and exercise. On one hand, it’s a great way to unwind after a long day, helping to release pent-up stress and tension. But, timing is crucial here. Exercise too late, and you might find your adrenaline levels still soaring when you’re trying to settle down for the night.
The key is to find a balance that works for you. For some, a gentle yoga session or a light walk after dinner is just what the doctor ordered. These types of activities tend to be less stimulating and can actually aid in relaxation. For others, anything more intense could equate to counting sheep for hours. I remember my own trial and error with evening workouts — a late-night spin class left me too energised to sleep, feeling like I’d had three espressos back-to-back.
Studies suggest that avoiding high-intensity workouts at least one to two hours before bedtime may be best for sleep quality. But if evenings are your only free time, try gradually experimenting with the intensity and see what your body responds to best. Keep a sleep diary if necessary, noting how you feel after different evening routines. It might take a bit of tweaking, but eventually, you’ll find your sweet spot.
What to Avoid: Common Mistakes in Sleep and Exercise
Finding the right balance between sleep and exercise is key, but there are pitfalls that many of us fall into. One common mistake is not giving your body enough time to cool down after a workout. Post-exercise, your body temperature is elevated, and if you head straight to bed, you might find it difficult to drift off. Allow at least an hour for your body to settle, especially if you’ve been going full throttle at the gym.
Another trap is over-exercising — it’s so easy to think more is better, but it can actually backfire. Exercising intensely without adequate rest can lead to restlessness at night and even insomnia. I’ve been there myself, ambitiously signing up for more classes than my body could cope with, which only led to me feeling more tired and less effective in both my workouts and sleep patterns.
Also, don’t overlook the importance of a proper cool-down routine. Stretching and gentle movements can help signal to your body that it’s time to wind down. Some people even find a short meditation session following exercise beneficial. It’s all about telling your body that the hard work is over, and it’s time to relax. Remember — exercise should complement your sleep, not compete with it.
Listening to Your Body: The Personalised Approach
When it comes to sleep and exercise, there’s no one-size-fits-all answer. Everyone’s body is different, and what works for one person might not work for another. The most important thing is to listen to your own body. If a certain workout routine is leaving you exhausted rather than energised, it might be time to reassess. I’ve had to adjust my own routine several times, trying different types of exercise and timings to see what feels best.
Keeping a journal can be incredibly helpful in identifying patterns. Note down when you’re exercising, how you’re feeling throughout the day, and how you’re sleeping at night. Over time, you’ll likely see trends emerging that can guide you in fine-tuning your routine. It’s a process of trial and error, and that’s perfectly okay. The aim is to find a rhythm that suits your lifestyle and helps improve both your fitness and sleep quality.
And if you’re feeling a bit lost, don’t hesitate to seek advice. Whether it’s from a personal trainer or a sleep specialist, getting a professional perspective can provide insights you might not have considered. You can also find tips and stories from folks like me on platforms like dozywave.co.uk. Remember, your health journey is unique, and it’s about finding what makes you feel your best.
Making It Work: Tips for Balancing Sleep and Exercise
So, you’re set to optimise your sleep and exercise routine — but how do you make it work day-to-day? First off, consistency is key. Try to exercise at the same time each day to help your body get into a rhythm. This not only aids in sleep but also makes sticking to your workout plan easier. It’s like making exercise a non-negotiable appointment with yourself — it becomes part of your day.
Don’t forget the power of a proper wind-down routine. After exercise, especially if it’s later in the day, focus on activities that promote relaxation. A warm bath, reading a few chapters of a book, or a bit of light stretching can help transition your body into sleep mode. Avoid screens if you can — the blue light emitted can interfere with your natural sleep signals.
Finally, stay flexible and be kind to yourself. Life’s unpredictable, and sometimes your best-laid plans will go awry. If you miss a workout or have a rough night’s sleep, don’t beat yourself up. Tomorrow’s another day to try again. The journey to better sleep and exercise synergy is ongoing, and every small step counts. Keep tweaking and listening to your body — you’ll find the balance that works for you in time.