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Longevity Stack
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Protocol · 12 weeks

Demanding Years

Staying sharp through a demanding working life

Why this is good for you

The decades of hardest work are also the decades when the habits that decide your seventies get set.

  • Lower chronic cortisol — a primary driver of accelerated biological ageing
  • Preserved hippocampal volume and prefrontal performance into the 60s+
  • Reduced cardiometabolic risk from stress-driven visceral fat

Overview

A 12-week plan for people still in full working life: protect sleep under pressure, keep chronic stress from becoming a permanent state, and hold glucose steady through long days — so the demanding years fund the good ones instead of borrowing from them.

Who this is for

  • ·People in their 40s–60s carrying heavy work or caring loads
  • ·Anyone whose sleep and stress have quietly become the price of the job
  • ·Those who want to arrive at retirement with something left in the tank

The four pillars

Sleep priority

Fixed wake time, 0.4 lux evening light, 19°C bedroom, no caffeine after 12:00.

Cognitive load management

Two 90-min deep-work blocks, then a hard stop. Walk between meetings.

Adaptogenic stress buffer

Daily ashwagandha + rhodiola cycle; L-theanine with morning caffeine.

Metabolic stability

Protein-forward breakfast, no refined carbs solo, walk 10 min after meals.

Phased timeline

Phase 1 · Weeks 1–4

Foundation

Sleep + light + caffeine discipline

  • Lock wake time
  • Cut alcohol
  • Install blue-light blockers post-sunset
Phase 2 · Weeks 5–8

Load

Add cognitive + adaptogenic stack

  • Introduce Lion's Mane + Rhodiola
  • Begin HRV tracking
  • Two deep-work blocks/day
Phase 3 · Weeks 9–12

Compound

Optimise & retest

  • Reassess HRV, RHR, glucose
  • Adjust dosing
  • Add peptide layer if warranted

Daily schedule

06:30Sunlight + 10 min zone-2 walk
07:00Caffeine + L-theanine 200 mg, NMN 500 mg
07:30Protein 40 g breakfast, omega-3 2 g, vitamin D3/K2
09:00Deep work block 1
12:30Lion's Mane 1 g with lunch
15:00Rhodiola 200 mg if stress spike
18:30Strength or zone-2 training 30–45 min
21:30Magnesium glycinate 400 mg, ashwagandha 600 mg
22:30Lights out — 7.5 h sleep window

Biomarkers to track

MarkerTargetRationale
Morning cortisol10–18 µg/dLMarker of HPA axis tone.
HRV (rMSSD, 7-day avg)+10% over baselineParasympathetic recovery.
Fasting glucose< 95 mg/dLStress-driven insulin resistance.
hs-CRP< 1.0 mg/LInflammatory load from chronic stress.

Cautions & contraindications

  • · Pregnancy or lactation
  • · Active thyroid disease (ashwagandha caution)
  • · On SSRIs without physician oversight (rhodiola interaction)

Educational content only — consult a qualified physician before starting any protocol.

Selected references