I've sat across the table from a lot of coaches. Most of them know training. Very few know what happens after the training ends.

Tom Sheppard is not most coaches.

Tom is our head coach here at elitefts. When he put together a full breakdown on sleep, I paid attention. Not because sleep is some wellness trend I suddenly care about. Because I've watched what happens when serious lifters treat sleep like something they negotiate with. They break down. They plateau. They grind for results that never come.

The video below is long. That's intentional. Tom covers sleep architecture, the relationship between cortisol and melatonin, practical morning and evening protocols, what actually works for supplementation, and what you're probably using right now that's making things worse.

Watch it. Then read this.

Why You Actually Sleep

Before Tom gets into how to sleep better, he covers why sleep exists at all. Once you understand what sleep is doing, you stop treating it like wasted time.

Sleep is not passive. It is one of the most metabolically active periods of your day.

Your lymphatic system, the body's waste disposal network, runs hard while you sleep. So does the glymphatic system, the branch that specifically clears your brain. During deep sleep, your brain cells actually shrink. That creates space for cerebrospinal fluid to move through and flush the metabolic waste that builds up during the day. Beta-amyloid plaques. Tau proteins. The same compounds associated with Alzheimer's and Parkinson's. That clearance happens at night, or it doesn't happen.

Growth hormone pulses occur primarily during deep sleep. Tissue repair cascades follow. If you're training hard and sleeping poorly, this is where your recovery falls apart. Not in the gym. After it.

Your immune system does a significant portion of its work while you sleep. Memory consolidation, specifically the transfer of what you learned into long-term storage, only happens during sleep. None of it happens while you're awake.

And beyond all of that: while you're awake, your nervous system runs in sympathetic mode. Get up, go, produce, expend. Sleep is when you shift to parasympathetic. Rest and digest. That balance is not optional. Chronically undercut it, and everything downstream suffers.

How Much Sleep Do You Actually Need?

Tom's answer: eight hours is a rough ballpark, but the real question is different. The real question is, how long does your body need to do everything that only happens while you're asleep?

That depends on several factors.

Genetics. Specific genes, DEC2 and PER3 among them, along with the clock gene, influence your sleep architecture and how much you need. Some people have an allele of the clock gene that makes them genuinely function better on four to five hours of sleep. You've met people like this. They're not lying. Their biology is wired differently.

Chronotype. Your body has an optimal sleep window built around sunrise and sunset. Sleep inside that window, and quality goes up, requirement goes down. Fight your chronotype and quality drops. Extra hours don't fully compensate.

Age. Young people need more sleep because the brain is developing aggressively. Older people often sleep less but need more, because sleep architecture degrades and the quality of each hour drops.

Training load. More physical damage requires more deep sleep to manage repair. More volume, more need.

Quality. Better sleep means less of it is required to accomplish the same restorative work.

The simplest indicator Tom gives: you should be waking up without an alarm. Energy high in the morning, tapering toward evening. If you're dragging through afternoons and reaching for stimulants, that is not a willpower problem. That's a signal.

The Architecture of a Sleep Cycle

A full sleep cycle runs through three main stages. This is the section that changes how most people think about sleep.

Light Sleep

About 50% of your total sleep time. This is where sleep spindles occur, bursts of brain activity that move memories from short-term storage in the hippocampus into the cortex, where deep and REM sleep can then embed them into long-term memory. It's also why power naps work. A short nap can move enough material out of the hippocampus, freeing up space for continued learning.

Deep Sleep (N3)

Target is 20 to 25% of your total sleep. Deep sleep is front-loaded. The majority happens in the first three to four hours of your night. The glymphatic system runs at roughly ten times its normal rate here. Growth hormone spikes. Tissue repair cascades get triggered. Declarative memories get embedded. And your brain identifies which neural connections are no longer useful, flagging them for removal.

REM Sleep

Also, 20 to 25% of your total sleep. REM is back-loaded. It dominates the second half of your night. Your amygdala, your emotional processing center, goes largely offline during REM. This allows you to process emotional memories without the charge attached. Without this, every recalled memory would carry the same emotional weight as the original moment. REM is also where creativity lives, where new connections form between existing memories, and where the neural pruning flagged during deep sleep gets executed.

The Cortisol and Melatonin Relationship

Tom walks through this in detail, explaining why so many people feel groggy during the day and restless at night.

Cortisol rises just before you wake up. It peaks within the first hour or two of the day. This is normal and necessary. Cortisol gives you energy, stabilizes blood sugar, and drives sympathetic activation. Without a proper morning spike, you're flat all day.

Melatonin rises several hours before your intended sleep time. It is not a light switch. It is the on-switch that initiates the cascades that eventually produce sleep. Take it right before bed and it's already too late for it to do its job.

These two systems feed each other. When morning cortisol spikes and then drops cleanly throughout the day, melatonin can rise sharply in the evening. When cortisol stays chronically elevated, which is most people living modern lives, melatonin gets blunted. Both flatten. Groggy during the day, restless at night.

The causes are everywhere: blue-light-dominant artificial lighting, chronic stress, evening screen time, shallow chest breathing, and training or demanding cognitive work too late in the day. The fix is a two-phase approach.

Owning the Morning

Tom's framework: do the right things at the right time. Morning is about anchoring that cortisol spike.

Keep breakfast lower in carbohydrates. A large carbohydrate load spikes blood sugar, which blunts cortisol. You want blood sugar semi-low in the morning so cortisol keeps climbing.

Get light exposure as early as possible. Your body reads the wavelength of incoming light to tell time. Early sunlight signals: wake up, go. If you're up before the sun, a 10,000-lux light source can substitute.

Cold exposure works. A cold shower triggers aggressive heat production in the body. When you get out, those mechanisms keep running, and core body temperature rises. Cortisol and adrenaline go with it. It's not magic. It's physiology.

Do your hardest cognitive work first. Adrenaline speeds up neuronal transmission. Processing is faster. Whatever is most demanding, your training, your writing, your most difficult problem, do it now. Easing yourself in is a false economy.

Consume your stimulants early. Caffeine has a half-life of five to seven hours. A 2pm coffee still has half its load in your system at 9 pm. Get it in early and let it clear before you need to wind down.

Owning the Evening

Evening is about getting cortisol down so melatonin can rise.

Block blue light. Dimmed or red-spectrum lighting in the hours before bed. Blue-light-blocking glasses if you're still on screens. Blue light tells your nervous system it's daytime.

Shift carbohydrates toward the evening. Higher blood sugar suppresses cortisol. Let your evening meal be the one with more carbs. Give it two to three hours before sleep so digestion doesn't drive sympathetic activation right before bed.

Bring body temperature down. Optimal ambient sleep temperature for most people is 64 to 68°F. A hot shower before bed works the same reverse mechanism as cold does in the morning: your body activates heat-shedding pathways, you get out, and core temperature drops.

Melatonin timing matters. Take it 60 to 90 minutes before your target sleep time, not when you're already in bed. Fast metabolizers may need less lead time. Average metabolizers need the full window.

Create a parasympathetic descent. Journaling, breathwork, gratitude practice, vagus nerve work. These are tools for downregulating a nervous system that has been running in sympathetic all day. The goal is not to be in bed at a specific time. The goal is to actually be ready to sleep when you get there.

Your Sleep Environment

Dark. Quiet. Cool.

No electronics in the bedroom if you can manage it. Tom runs an EMF-blocking device next to his bed and logged a three to four percent improvement in deep and REM sleep from that addition alone.

Firm mattress or separate blankets if you share a bed. Movement from a partner disrupts sleep even when you don't fully wake. Separate bedding, standard practice in Scandinavia, significantly reduces those disruptions. Tom has a sheet. His wife Naomi has what he calls an impenetrable fortress of duvets. They both sleep better for it.

Nasal breathing matters. Mouth breathing at night drives snoring and, in serious cases, sleep apnea. Tom trained himself out of it by wearing mouth tape during workouts first. If he could maintain nasal breathing at 160 to 170 bpm on the assault bike, sleeping with it became straightforward.

What Not to Take

Tom is direct here. Sedation and sleep are not the same thing.

Antihistamines like diphenhydramine, found in NyQuil and most over-the-counter sleep aids, sedate you by blocking histamine. But they do not produce normal sleep architecture. Deep and REM get compressed. The compound has a long half-life and blunts your morning histamine and acetylcholine response. You wake up foggy and worse off than before.

CBD in doses high enough to produce sedation disrupts serotonin signaling through the endocannabinoid system. Sleep architecture degrades. Alcohol does the same thing to an even greater degree. Benzodiazepines follow the same pattern, but faster and harder. Use any of these consistently and you'll eventually reach rebound insomnia, where your sleep architecture has been so degraded that you can't sleep without them.

Going unconscious is not sleeping. The distinction matters.

Supplementation: What Actually Works

Glycine binds to the suprachiasmatic nucleus, your brain's thermostat, and helps lower core body temperature. Cheap. Effective for hot sleepers. Useful post-training if you train late.

Magnesium helps displace adrenaline from its receptors, lowering sympathetic activation. Glycinate is solid. Threonate has the best evidence for specifically cognitive and sleep-specific benefits.

Melatonin dosing varies massively by individual. Tom's personal sweet spot is 20mg. Some people do well at 2mg. Start low and find your dose. The concern that exogenous melatonin disrupts your own endogenous production has been largely disproven at this point.

Dragon's blood and pearl powder are high-ORAC antioxidants that reduce systemic inflammation. When inflammation is high, the glymphatic system gets outcompeted for resources. Bring inflammation down, and it can do its job. Tom saw significant REM improvements in Dave's numbers, which were running critically low, within three to four weeks of adding these to the protocol.

Peptides: DSIP works well for anxious, easily-woken people with chronically elevated cortisol. Epitalon improves pineal gland function, which degrades with age, and shows telomere-protective effects worth considering for older lifters. Selank improves GABA activation, which matters if racing thoughts are what's keeping you awake.

For periods of poor sleep: High-dose creatine (10 to 30 grams) and noopept can reduce the neurological inflammation and glutamate spike that accompany sleep deprivation. These don't replace sleep. They blunt the worst of the damage while you fix the underlying problem.

Sleep is the recovery you've been skipping. Start with the video. Then come back to this.

Live, Learn, Pass On.
Dave Tate / elitefts