The Zero-Cost Baseline Protocol

Maximum longevity impact using only what nature and time provide — no spending required.

Protocol overview

Free interventions deliver the majority of longevity benefit. Circadian rhythm alignment, consistent sleep, zone 2 exercise, time-restricted eating, and deliberate heat and cold exposure are all free — and collectively outperform most supplement stacks in the research literature. This protocol proves the foundation before layering anything that costs money.

Time commitment: 5–8 hours. Complexity: Beginner. Cost level: Free.

Who this is for

Anyone starting their longevity journey, or anyone wanting to maximize impact before spending on supplements or diagnostics.

Core principles

Consistent 7–9 hour sleep window anchored to sunrise — the most impactful free intervention in the rankings
150+ minutes of Zone 2 cardio weekly — sustainable, conversational-pace aerobic training
2–3 resistance training sessions per week using bodyweight or free weights
Time-restricted eating (12–16 hour overnight fast) to activate autophagy without caloric restriction
Deliberate cold exposure (cold shower, cold plunge) to activate brown adipose tissue and stress-resilience pathways
Morning sunlight within 30 minutes of waking to set circadian rhythm and optimize cortisol timing

Interventions from the rankings

Schedule overview

Daily

Sunlight exposure 15–30 min within 30 min of waking
Cold shower (deliberate cold exposure)
7–9 hours sleep in a consistent window
Time-restricted eating (12–16 hour overnight fast)

Weekly

Zone 2 cardio session (3–4x/week, 30–45 min at conversational pace)
Resistance training (2–3x/week, bodyweight or free weights)
One 16–18 hour fast