Topic
Slow-wave sleep
Everything we've written on Slow-wave sleep — 9 articles covering the mechanism, the evidence, comparisons, and practical considerations.
9 articles
Sleep and recoveryDSIP and the deep-sleep story — what the original peptide research suggestedIt's 1974 in Basel, Switzerland, and a rabbit is asleep. Not naturally asleep — electrically induced into a slow-wave state, its brain oscillating in the long, lazy delta rhythms that characterize the deepest phase of sleep. Marcel Monnier and Guido Schoenenberger are collecting something from the animal: blood drawn from the cerebral venous sinus, the vessel draining the sleeping brain. Their hypothesis is strange by the standards of the time. They believe sleep isn't just a brain state — they believe it might be a circulating signal. Something in the blood of a sleeping animal, they suspect, could make a waking animal sleep.8 min readSleep and recoveryGrowth hormone and the slow-wave window — why sleep depth matters more than durationYou're in your forties and you train hard. You used to recover in a day. Now it takes three, sometimes four. You haven't changed much about how you train, and nothing obvious in your life has gotten worse. The soreness just lingers longer. The energy that used to be there by Wednesday morning now shows up, if it shows up, on Thursday. You sleep seven hours. Sometimes eight. And yet something in the repair cycle has gone quiet.8 min readSleep and recoveryWhy melatonin stops working after 40You started with half a milligram and it worked. Then it worked less well and you moved to one milligram, then three, then five, then ten — the gummy your partner saw on the nightstand that said ten milligrams on the label as if that were a reasonable thing to put in a gummy. And sleep has gotten worse, not better, or marginally better in a way that doesn't match the dose escalation. And somewhere in the background is a nagging sense that you're doing something wrong but you don't know what because melatonin is natural and natural means safe.7 min readSleep and recoveryMK-677 for sleep architecture — what the studies showedYou're in your mid-forties and you got eight hours last night. You know you got eight hours because the ring on your finger told you so in the morning, right before you shuffled to the coffee maker feeling like you'd slept for four. The tracker said deep sleep: 38 minutes. REM: 1 hour 12 minutes. You don't entirely trust the tracker, but you trust the feeling in your body, and the feeling says something important stopped happening somewhere in the night.8 min readSleep and recoveryPeptides for circadian rhythm disruption — when your biology is out of syncYou land on a Tuesday, local time 9 a.m., body convinced it's 2 a.m. You know this feeling and you know it passes. But three weeks later you're still waking at 4, still dragging at 2 p.m., still not entirely sure where inside the day your body thinks it belongs. The jet lag was supposed to be a week. This feels like something more.10 min readSleep and recoveryPeptides for night shift workers — beyond melatonin and caffeineYou finish your shift at seven in the morning. The drive home is in full daylight — bright, direct, summer-morning light hitting your retinas at exactly the wrong time. You get home, pull the blackout curtains, take the melatonin, and lie there in the dark with your nervous system running at eleven o'clock at night energy while the rest of the world is starting its day. You fall asleep around ten-thirty, maybe eleven. You need to be back at eleven p.m. You have roughly eight hours but the sleep you get in them doesn't feel like eight hours. It never does.10 min readSleep and recoveryPeptides for sleep — what research has explored, by what they actually doYou lie there with your eyes closed and your brain still running. The ceiling exists. You know every texture of it. The thoughts aren't loud — they're just present, a low hum that refuses to quit. Or the opposite: you fall asleep fine, and then at 3 a.m. you're wide awake with nothing particular to blame. You check your phone even though you know you shouldn't. The light stings. You're tired in a way that sleep keeps failing to fix.10 min readSleep and recoverySleep architecture: deep sleep, REM, and why the night isn't one thingYou wake up after eight hours and feel like you got three. You did everything right — lights off at ten, no phone, no caffeine after noon, blackout curtains — and still you surface from sleep feeling scraped out and slow. The hours were there. Whatever sleep was supposed to do with them apparently didn't happen.8 min readSleep and recoveryThe sleep that broke in your 50s — what changed in the architectureYou used to sleep through thunderstorms. Through hotel rooms, through nights before important things, through the ordinary chaos of a life that had no shortage of stress. You'd put in seven or eight hours and come out the other side feeling like something had actually happened while you were under — muscles recovered, mind cleared, the previous day genuinely gone. That version of sleep was so reliable you stopped thinking about it. Then, somewhere around your early fifties, it changed. Not all at once. Gradually and then, one particular year, undeniably.8 min read