01·Cost
What it costs
Upfront and ongoing, in real money. A free walk and a ₹15,000 infusion don't belong in the same conversation until you've weighed what each one returns.
The Payoff Framework
Not every intervention deserves your time.
Beyond23 separates strong evidence from good marketing—then connects your labs, wearables and health history to show what could matter for you.
The evidence landscape
10 interventions reviewedDo firstUse when matchedOptionalNot recommended yetbubble size ≈ cost
Illustrative positions from published evidence — not any individual's ranking. Hover or tap a bubble.
How the framework works
First, clear the evidence bar. Then calculate the payoff.
Interventions with inadequate evidence or unacceptable risk do not reach your list. Those that remain are ranked by expected benefit, personal relevance, effort and cost.
02·Effort
What it asks of you
The adherence burden most tools quietly ignore. A daily capsule and a weekly clinic visit are not the same ask — and the best plan is the one you'll actually keep.
03·Return
What you stand to gain
Not a fixed label. It's the strength of the evidence, the size of the effect, and how far you personally sit from optimal on the markers it moves. That last part is why no generic chart can finish the job.
The evidence bar
Four things must be true before we recommend it.
01
Mechanism
A plausible biological pathway to the outcome — not just a correlation in a headline.
02
Effect size
A change large enough to notice against the noise of a real human life, not just statistical significance.
03
Replication
The finding survives being tested by researchers who aren't rooting for it.
04
Safety margin
The downside is understood, bounded, and worth what the upside offers on your specific numbers.
One worked example
How the framework reads a single intervention.
Before scrolling the full library, here is one card fully unpacked — evidence, when it is most relevant, what to keep in perspective, and how we would track it.
DO FIRSTEvidence: Strong for health outcomes
Steady aerobic training
Build aerobic fitness with repeatable, conversational-pace work. Consistency matters more than finding a perfect ‘Zone 2’.
Cost
Low
Effort
Medium
What the evidence supports
Regular moderate aerobic activity improves cardiorespiratory fitness and is associated with lower cardiovascular, metabolic and all-cause health risk.
Most relevant when
Your aerobic fitness or weekly movement is low, or most of your activity is brief and high-intensity.
Keep in perspective
‘Zone 2’ is a practical way to regulate intensity, not a uniquely proven biological threshold. A pace you can sustain and repeat is more important than a perfect wearable calculation.
Safety
Build gradually. New chest pain, faintness or disproportionate breathlessness warrants medical review.
The reading room
How we read 10 popular interventions.
Evidence strength, personal relevance, and safety are separate questions. A card can be strong on one and quiet on another.
Evidence reviewed · July 2026·Reviewed by the Beyond23 medical team
Start here · the full evidence spectrum
DO FIRSTEvidence: Strong for health outcomes
Steady aerobic training
Build aerobic fitness with repeatable, conversational-pace work. Consistency matters more than finding a perfect ‘Zone 2’.
Cost
Low
Effort
Medium
DO FIRSTEvidence: Strong
Resistance training
Build and preserve the strength, muscle and function that make a longer life more capable.
Cost
Low
Effort
Medium
DO FIRSTEvidence: Moderate
Sleep consistency
A regular sleep-wake rhythm may matter nearly as much as how long you sleep.
Cost
Low
Effort
Medium
USE WHEN MATCHEDEvidence: Strong in eligible patients
GLP-1 medications
A powerful clinical tool for appropriate metabolic risk — not a universal longevity drug.
Cost
High
Effort
Medium
OPTIONALEvidence: Limited–moderate
Sauna
Enjoyable and potentially beneficial — but the strongest longevity claims remain observational.
Cost
Medium
Effort
Low
The rest of the field
USE WHEN MATCHEDEvidence: Strong for strength
Creatine monohydrate
One of the better-supported supplements for improving training-driven strength and lean mass.
Cost
Low
Effort
Low
USE WHEN MATCHEDEvidence: Strong for triglycerides
Omega-3 (EPA/DHA)
Useful for specific lipid and dietary needs; not every formulation delivers the same benefit.
Cost
Medium
Effort
Low
USE WHEN MATCHEDEvidence: Limited–moderate
Berberine
May modestly improve glucose and lipids, but evidence quality and product quality vary.
Cost
Low–Medium
Effort
Low
OPTIONALEvidence: Limited
Cold plunge
May improve short-term recovery, but it is not proven to extend life — and timing matters.
Cost
Medium
Effort
Medium
NOT RECOMMENDED YETEvidence: Insufficient
NAD⁺ IV drips
Expensive and invasive, with no convincing evidence of meaningful healthspan benefit.
Cost
High
Effort
High
Your payoff
See whether this belongs in your plan, what it could realistically change, and where it ranks against your other options.
- Personal relevance
- Signals it may improve
- Priority versus your alternatives
- Recommended starting point
- How we would track response
Requires your health history, labs and available wearable data.
Educational information, not a diagnosis or prescription. Medication decisions require consultation with a qualified clinician.
FAQ
Questions people ask us.
We weigh three lenses together — cost, effort, and return — against your actual markers. Something only reaches your do-first list when the evidence is real, the effect size is meaningful, and the gap it closes is one you personally have.
You've seen how we think.
Now see it think about you.
Connect your labs and B23 ranks every one of these against your own markers — in order, with the reasoning behind each place.
Evidence-first, no trends
Ranked against your markers
4-point evidence bar