You probably clocked 7 or 8 hours last night. Maybe more. So why did the first game of open play this morning feel like someone else was moving your feet?
Here’s something most players don’t know about June: the extra daylight isn’t just warming up your courts. It’s quietly trimming the most restorative part of your sleep — without changing your hours at all.
Your body runs on light, not a clock
Your sleep isn’t timed by your phone. It’s timed by light. A hormone called melatonin signals your brain to wind down — and it only starts building when it gets dark outside.
In December, darkness arrives around 5pm. Melatonin kicks in early, and by 10pm you’ve had hours of wind-down. You fall asleep primed.
In June, sunset is around 8:30pm. Your melatonin doesn’t start building until 9 or later. So even if you get in bed at your usual time, you’re falling asleep before your brain has finished its prep work. The quality of those first hours of sleep is lower than it was in January — and you have no way to feel that happening.
The other end is the bigger problem. Sunrise in June hits around 5:30am, sometimes earlier. That morning light suppresses melatonin and pulls you toward waking — even with your alarm set for 7. Your body may not fully rouse, but the deepest phase of sleep is already over.
Your total hours don’t change much. But the window of restorative sleep — the part where your nervous system does its repair work — gets compressed from both sides.
The 15-minute lag on court
The first thing a short-changed night steals isn’t your stamina. It’s your timing.
Deep sleep is when your brain consolidates movement patterns and resets reaction speed. It’s front-loaded — most of it happens in the first few hours after you fall asleep. When you fall asleep late, the damage doesn’t show up in your energy levels the next morning. It shows up in precision.
You’ll notice it in the first 15 minutes of play. A dink you return automatically clips the tape. A volley you’re usually early on, you’re suddenly a half-step late. Your footwork is there. Your read of the ball is there. But execution lags just slightly behind intention.
Most players chalk it up to warming up slowly. And usually, the game does smooth it out — once the nervous system comes fully online. But that first 15 minutes on the court, especially at an early open play, is where the June sleep compression shows up most clearly.
Three things that reclaim the window
- Block the morning light. This is the bigger lever. A sleep mask or blackout curtain delays the signal that ends your sleep, giving your body more time in deep recovery. You don’t need to sleep longer — you just need that last hour to be undisturbed.
- Keep your wake time consistent, even on off-days. Your circadian clock anchors to when you get up, not when you go to bed. Sleeping in on days you don’t play pushes your melatonin window later — which makes the problem worse the next time you’re on the court at 8am. A steady wake time holds the whole system in place.
- Dim the room an hour before bed. Your brain can’t distinguish between a phone screen and late-evening sun. Both delay melatonin. Spend the hour before sleep in low, warm light, and melatonin starts building earlier. By the time you close your eyes, your body is actually ready.
