The Cornelis Method
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Benefits

  • Improved cognitive performance
  • Higher training adaptation
  • Better hormonal balance
  • Immune resilience

Method summary

  • 7–9 hours nightly, consistent schedule
  • Bedroom 65–68°F (18–20°C)
  • No caffeine after 12:00
  • Morning sunlight within 30 min of waking
  • 4-7-8 breathing or body scan 5 min in bed
Weekly protocol

What a week looks like

Mon
Sauna + parasympathetic resetWarm-up: 5 min easy walk + 5 min mobility (T-spine, hips, ankles). Working sets: 3× 15–20 min sauna at 80–90°C, RPE 5–6 (heat, not exertion), 3–5 min cool shower or plunge between rounds. Rest between rounds: hydrate 300 ml water + electrolytes. Tempo cue: nasal breathe throughout, exit any round if HR >130 or dizzy. Finisher: 10 min supine legs-up-the-wall + 5 min box breathing 4-4-4-4. Fueling: 500 ml water + pinch salt pre, 30 g protein + slow carbs within 60 min post. Wind-down 60–90 min pre-bed: dim lights, screens off, room 18°C. Total session time: 75–90 min.
Tue
AM sunlight + breath workWarm-up: step outside within 30 min of waking. Working sets: 10 min direct sunlight exposure (no sunglasses, no window glass) at RPE 1, walking or standing. Rest: none. Tempo cue: face east, eyes soft toward horizon, not the sun. Finisher: 5 min box breathing 4-4-4-4 seated after sunlight. Evening: 5 min physiological sighs (double inhale, long exhale ×20) 60 min pre-bed. Fueling: no caffeine until 90 min after waking (protects afternoon adenosine). Total session time: 20 min.
Wed
Sauna + cold contrastWarm-up: 5 min easy walk. Working sets: 3× 15 min sauna at 80–90°C, RPE 5–6, alternated with 3× 1–2 min cold plunge at 10–12°C (AM only, never evening). Rest between rounds: 2 min air recovery. Tempo cue: enter cold with a long exhale, keep shoulders soft, out at first strong shiver urge. Finisher: 10 min mobility flow (couch stretch, 90/90, thoracic bridge). Fueling: pre-hydrate 500 ml + electrolytes, 20–30 g protein within 60 min post. Total session time: 75–90 min.
Thu
HRV check-in + deload decisionWarm-up: 5 min seated breath awareness. Working sets: review 7-day HRV trend, RHR, subjective readiness (1–10). Rest: full analysis session, no physical load. Tempo cue: baseline vs. rolling 7-day average, if HRV down >10% or RHR up >7 bpm, deload (cut volume 30–40%, hold intensity). Finisher: journal top 3 stressors + 1 mitigation for each. Fueling: normal day, no alcohol tonight to keep tomorrow's data clean. Total session time: 15–20 min.
Fri
Sauna + wind-downWarm-up: 5 min easy walk + 5 min mobility. Working sets: 2× 20 min sauna at 80–90°C, RPE 5–6, 3 min cool shower between. Rest: hydrate 300 ml + pinch salt. Tempo cue: relaxed jaw, slow nasal breath, exit if lightheaded. Finisher: 10 min NSDR / yoga nidra audio, supine, dark room. Fueling: last meal ≥3 h before bed; kiwi or tart cherry snack OK; no alcohol (tanks REM if within 3 h of sleep). Wind-down: screens off 60 min pre-bed, blue-light glasses if unavoidable. Total session time: 65–75 min.
Sat
Nature walk + long mobilityWarm-up: 5 min slow walking, ankle circles, hip openers. Working sets: 45–60 min outdoor walk at RPE 3, HR <60% max, nasal breathe throughout, cadence 100–115 spm. Rest: none, steady. Tempo cue: gaze soft, panoramic vision (parasympathetic anchor). Finisher: 20 min mobility flow, 2× 60 s couch stretch/side, 2× 60 s 90/90 switches, 2× 45 s deep squat hold, 2× 30 s thoracic bridge, 2× 45 s pigeon/side. All positions 4 s in, breathe, no bounce. Fueling: fasted OK if <60 min, or 20 g carb pre; whole-food meal within 90 min post, fiber-first. Total session time: 70–85 min.
Sun
Sleep prep + week resetWarm-up: 5 min light stretching. Working sets: 20 min easy walk RPE 2 after lunch + 15 min mobility flush pre-bed (hip flexors, hamstrings, T-spine). Rest: unstructured, low-stimulation day. Tempo cue: no hard cardio, no heavy lifts, no late caffeine. Finisher: 10 min box breathing or NSDR 90 min pre-bed, magnesium glycinate 200–400 mg + optional glycine 3 g. Fueling: last meal ≥3 h before bed, no alcohol, hydrate steadily through the day. Set wake alarm for Monday within ±30 min of usual. Total session time: 45 min.
Daily
Circadian & wind-down anchorPassive anchor, not a session. Morning: 10 min sunlight within 30 min of waking. Caffeine cutoff 10 h before bedtime (usually 12:00–13:00). Consistent wake time ±30 min including weekends. Evening wind-down 60–90 min: lights <10 lux, screens off or blue-light glasses, room 18–20°C, bed for sleep and intimacy only. If not asleep in 20 min, get up, dim room, read paper until sleepy.
Adherence

Track your check-ins

Log a daily check-in for recovery & sleep and watch your streak, weekly adherence, and pillar score climb. Charts unlock once you sign in.

Sign in to track →
Sleep log

Enter last night's numbers

Sleep log

Log last night vs. targets

Pull these from Oura, Whoop, Apple Health, or your bedside estimate.

Total—

—

Target 7.5–9 h

Deep—

—

Target 13–23%

REM—

—

Target 20–25%

Efficiency—

—

Target ≥ 85%

Wind-down

Pre-sleep breathwork

4-7-85 min

Pre-sleep. Lowers HR and shortens sleep onset.

Inhale

4

05:00

Today · by protocol

No sessions logged yet today.

  1. 1Lie in bed, tongue lightly touching the roof of the mouth behind the teeth.
  2. 2Inhale quietly through the nose for 4 seconds.
  3. 3Hold the breath for 7 seconds.
  4. 4Exhale audibly through the mouth around the tongue for 8 seconds.
  5. 5Repeat for 4–8 cycles or up to 5 minutes.
Practices

Core practices & cues

Caffeine cutoff

Daily

None after 10 h before bedtime (usually 12:00–13:00).

Alcohol audit

Weekly

Any drink within 3 h of sleep tanks REM.

Box breathing

Nightly

4-4-4-4 for 5 min pre-bed drops sympathetic tone.

Bright-light exposure

Daily in winter

10,000 lux for 10 min AM if no sunlight.

Nutrition

Foods, principles, and targets

  • Last meal ≥ 3 h before sleep, late eating fragments sleep architecture.
  • Kiwi, tart cherry, and glycine-rich foods (bone broth) mildly improve sleep onset.

Sleep duration

7.5–9 h

Sleep efficiency

≥ 85%

Deep (slow-wave) sleep

13–23% (≈ 1.0–1.8 h)

REM sleep

20–25% (≈ 1.5–2.0 h)

Light sleep

50–60% (balance, don't chase)

Wake after sleep onset

< 30 min

Bedroom temperature

18–20°C / 65–68°F

Supplements

Stack & dosing

Compound
Dose
Tier

Magnesium glycinate

60 min pre-bed

200–400 mg
core

Glycine

Drops core temp.

Pre-bed

3 g
optional

Apigenin (chamomile)

Pre-bed

50 mg
optional

Melatonin

Low dose only. Not for chronic use.

30 min pre-bed

0.3–0.5 mg
optional

Informational only. Confirm doses with your clinician, especially with medications.

Peptides

Advanced protocols

Compound
Dose
Status

DSIP (delta sleep-inducing peptide)

Deepen slow-wave sleep during periods of high stress or travel

Sub-Q 30 min pre-bed, cycled

100–300 mcg
Research

Epithalon

Melatonin rhythm and telomerase support in adults 40+

Human data limited. Discuss with a longevity clinician.

Daily sub-Q for a 10–20 day cycle, 1–2× per year

5–10 mg
Research

Selank

Anxiolysis without sedation to protect sleep onset

1–2× daily during acute stress cycles

250–500 mcg intranasal
Research

Peptides are prescription or investigational compounds. Use only under a qualified clinician who can monitor labs and side effects. Regulatory status varies by country.

Sleep & recovery

Recovery levers

  • Sauna 20 min, 3–4×/week improves sleep depth and drops all-cause mortality.
  • Cold exposure (2–3 min, 10–12°C) AM only, evening cold blunts sleep onset.
Biomarkers

What to track & how to move it

Sleep duration

≥ 7.5 h

Bedtime discipline, screen curfew.

HRV (RMSSD)

Trend upward vs. personal baseline

Sleep, Zone 2, breath work.

Resting HR

50–65 bpm

Aerobic fitness + sleep quality.

Deep sleep %

13–23%

Alcohol reduction, cool room, load management.

REM sleep %

20–25%

Cut late alcohol, protect last 3 h of sleep, consistent wake time.

Sleep efficiency

≥ 85%

Stable schedule, cool dark room, limit in-bed awake time.

Upload lab work to auto-track →
Troubleshooting

If you're off target, do this

Total sleep < 7 h

You're chronically under 7 h in bed asleep.

  • Anchor a fixed wake time 7 days/week, then back-calculate an 8.5 h bedtime.
  • Kill the 'one more episode' loop: set a screens-off alarm 60 min before bed.
  • Cut caffeine to before noon for 2 weeks and reassess.
  • Move training earlier, hard sessions after 19:00 push sleep onset by 30–60 min.
  • If you can't fall asleep in 20 min, get up, dim room, read paper until sleepy.

Deep sleep < 13% (or < ~60 min)

Slow-wave sleep is short, physical recovery, GH pulse, and glymphatic clearance suffer.

  • Zero alcohol for 10 nights, biggest single lever on deep sleep.
  • Drop bedroom to 18–19°C / 65–66°F; add a cool shower or 5-min sauna→cool rinse 60 min pre-bed.
  • Front-load training earlier in the day; add 1–2 Zone 2 sessions/week.
  • Last meal ≥ 3 h before bed; keep the pre-bed snack small if hungry.
  • Trial magnesium glycinate 200–400 mg + glycine 3 g pre-bed for 2 weeks.

REM sleep < 20% (or < ~80 min)

REM is compressed, memory consolidation, mood, and hormonal recovery drop.

  • Cut alcohol within 3 h of bed (REM is the first casualty).
  • Taper or stop nightly THC/CBD for 2 weeks, both suppress REM.
  • Protect the last 3 h of sleep: no early alarms, no snooze cycles.
  • Review SSRIs, beta-blockers, and high-dose melatonin with your clinician, all blunt REM.
  • Get 10 min AM sunlight and hold a consistent wake time to lock circadian phase.

Sleep efficiency < 85%

You're spending too much time awake in bed, fragmented, not restorative.

  • Only get in bed when sleepy; use the bed for sleep and sex only.
  • If awake > 20 min, leave the bedroom and return when drowsy (stimulus control).
  • Compress your sleep window by 30–60 min for 1–2 weeks to rebuild sleep pressure, then expand.
  • Screen for apnea if you snore, gasp, or wake unrefreshed, request a home sleep test.
  • Log caffeine, alcohol, late meals, and stress; look for the 1–2 patterns driving wake-ups.
See a clinician

Red flags

  • Loud snoring + daytime fatigue → sleep study for apnea.
  • Sleep onset > 30 min for > 2 weeks (chronic insomnia).
  • HRV drop > 20% for 5+ days without explanation.
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