Better sleep comes from a fixed wake time and hitting the 7-9 hours the National Sleep Foundation recommends for adults, not from any single supplement or gadget. Anchor your morning, protect the hour before bed from bright screens, and finish hard training at least three hours before lights-out. When sleep stays broken for weeks, CBT-I fixes the root cause instead of masking it. These are the levers I run myself.
How much sleep do adults actually need?
Most adults need 7-9 hours per night, according to the National Sleep Foundation's adult sleep guidance. Sleeping less than that on a regular basis is linked to worse focus, mood, and physical recovery.
The number isn't arbitrary. Deep sleep is when your body releases growth hormone and repairs muscle; REM sleep consolidates memory and steadies emotion. Cut the night short and you lose the back end, where most REM happens. For an endurance athlete, that shows up as a slower recovery and a higher resting heart rate the next morning. Track your own baseline for two weeks before you decide you're "a six-hour person" — most people who believe that are simply adapted to being tired.
How can I establish a consistent sleep schedule?
Pick one wake time and hold it every day, including weekends. The American Academy of Sleep Medicine notes that a consistent schedule helps regulate the body's internal clock, which stabilizes when you feel sleepy at night.
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Here's the protocol I give people:
- Set a fixed wake time first — say 5:30am — and keep it seven days a week.
- Get 10 minutes of outdoor light within an hour of waking to anchor your clock.
- Count back 8 hours to find your target lights-out (9:30pm).
- Set a wind-down alarm 45 minutes before that, not just a bedtime alarm.
- If you miss a night, still wake at the fixed time. Don't sleep in to "catch up" — that shifts your clock and wrecks the next night.
The wake time is the anchor. Bedtime drifts; wake time shouldn't.
What 5am brick sessions taught me about sleep
I train for Ironman, and the discipline that moved the needle most wasn't a new workout — it was guarding the last hour before bed.
During a heavy build block I was doing 5am brick sessions — bike straight into a run — and wondering why my legs felt dead by Thursday. The training was fine. My sleep wasn't. I was scrolling my phone in bed until 11, then up at 4:45. The CDC notes that exercise improves sleep but training too close to bedtime can interfere, and I'd stacked a late-evening swim on top of the late screens. So I moved the swim earlier, put the phone on a charger in the kitchen, and read a paper book for 20 minutes instead. Within a week my morning resting heart rate dropped and the bricks stopped feeling like punishment. Faith plays in here too: I pray before bed now instead of doom-scrolling, and ending the day settled rather than stimulated changed how fast I fell asleep. Discipline at night is what makes the 5am alarm survivable.
How do screens and exercise change your sleep?
Bright screens before bed suppress melatonin, the hormone that signals your brain it's time to sleep, according to Harvard Health Publishing. Exercise helps sleep overall but can backfire when it's too close to bedtime, per the Centers for Disease Control and Prevention.
| Habit | Effect on sleep | What to do |
|---|---|---|
| Screens in the hour before bed | Suppresses melatonin, delays sleep onset | Stop screens 60 min before bed |
| Morning outdoor light | Anchors your circadian rhythm | 10 min within an hour of waking |
| Hard exercise late | Raises core temp and adrenaline | Finish intense training 3+ hours before bed |
| Caffeine after 2pm | Blocks adenosine for 6+ hours | Cut caffeine by early afternoon |
| Warm, bright room | Works against melatonin and deep sleep | Keep it 65-68°F, dark, no LEDs |
What are the best relaxation techniques for winding down?
The most reliable wind-down techniques slow your breathing and lower arousal so your nervous system shifts toward sleep. You don't need an app — you need a repeatable routine.
- Box breathing: inhale 4 seconds, hold 4, exhale 4, hold 4, for 5 minutes.
- Progressive muscle relaxation: tense and release each muscle group from feet to head.
- A warm shower 60-90 minutes before bed — the temperature drop afterward promotes sleepiness.
- Write tomorrow's top three tasks so your mind stops rehearsing them.
- Read a physical book under warm, dim light.
Do the same two or three every night. Consistency turns them into a sleep cue your brain learns to trust.
Can insomnia be treated without medication?
Yes. Cognitive behavioral therapy for insomnia (CBT-I) is a non-pharmacological treatment the National Institute of Mental Health recognizes for improving sleep, and it targets the thoughts and habits that keep you awake.
CBT-I usually beats sleeping pills long-term because it fixes the cause rather than sedating you. It combines stimulus control (bed is for sleep only), sleep restriction (temporarily limiting time in bed to rebuild sleep pressure), and challenging anxious thoughts about sleep. If you've struggled to fall or stay asleep at least three nights a week for three months, that's chronic insomnia — ask a doctor about CBT-I before starting medication.
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