7 Things You Can Do
Tonight to Sleep Better
Knowing your bedtime is step one. These evidence-backed habits help you actually fall asleep when you hit the pillow, stay asleep, and wake up at your target time feeling rested.
Before Bed: Habits That Actually Work
Your brain needs a transition from active day mode to ready-to-sleep mode. These steps help you make that shift reliably, night after night.
Set a consistent bedtime and stick to it, even on weekends. Irregular sleep times confuse your body clock and make it harder to fall asleep. Your circadian rhythm runs on regularity.
Dim the lights in your home 60 to 90 minutes before your calculated bedtime. Bright light suppresses melatonin, the hormone that signals sleep. Warmer dimmer light helps your body start the transition.
Put your phone face-down and switch it to Do Not Disturb at least 30 minutes before bed. The content keeps your brain alert and the notifications break early sleep. Place it across the room if you can.
Keep your bedroom cool. Most sleep researchers point to 65 to 68 degrees Fahrenheit (18 to 20 degrees Celsius) as the ideal range. Your core body temperature needs to drop slightly to initiate sleep.
Avoid caffeine after 2 PM. Caffeine has a half-life of roughly 5 to 6 hours, meaning half of a 3 PM coffee is still active at 8 PM. Tea, energy drinks, and dark chocolate all count.
If you cannot fall asleep within 20 minutes, get up and do something calm in low light until you feel sleepy. Lying awake trains your brain to associate the bed with wakefulness, which makes the problem worse over time.
Use the same wake-up alarm every day. Consistent morning rise times anchor your entire sleep schedule. Even a single late morning can push your next bedtime back by an hour or more.
Why 90-Minute Cycles Change Everything
One sleep cycle lasts roughly 90 minutes and moves through three distinct stages: light sleep, deep (slow-wave) sleep, and REM. Each stage serves a different biological purpose.
Waking up mid-cycle is what causes that heavy groggy feeling. A well-timed alarm or a natural wake at the end of a cycle feels immediately clear-headed.
Answered Simply
Short, direct answers to the questions people ask most often about sleep duration, quality, and timing.
How many hours of sleep do adults actually need?
Is it better to sleep fewer hours but at consistent times?
What is a sleep cycle and why does it matter?
Does lying in bed but not sleeping count as rest?
Can you catch up on lost sleep at the weekend?
How does travel across time zones affect sleep?
Put These Tips to Work Tonight
Start with the simplest step: find your exact bedtime using the calculator, then build your wind-down routine around that target time.
Free, instant, and works anywhere in the world.
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