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The 2-minute check

Review your training and recovery.

Ten questions on energy, recovery, strength, sleep and measurement.

An illustrative score highlights topics to discuss; it does not measure fitness or health.

01 / 10

…

Answer for your current routine. Nothing is stored or sent.

After the check

What the score tells you.

01

It is a prompt, not a diagnosis

Responses highlight topics across the four frontiers.

02

What assessment can measure

Laboratory tests are billed at cost and interpreted by your physician. The full assessment measures VO₂max, lean mass, ApoB, HRV, sleep efficiency and eccentric strength.

03

Nothing is stored

No email, no cookie, no list. The score is calculated in your browser and gone when you close the tab.

Discuss your score

Discuss your next step.

Use the free call to discuss your goals and whether an assessment is appropriate.

Related references

Acute:chronic workload ratio (ACWR)

Recent training load divided by a longer-term average. A monitoring input, not an individual injury forecast.

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ApoB

Apolipoprotein B: a count of the particles that carry cholesterol into the artery wall; referred when out of range.

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DXA

Dual-energy X-ray absorptiometry: a scan estimating lean mass, fat mass and bone mineral density.

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Force–velocity profile

The relationship between force and movement speed, used to inform strength and power programming.

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Four frontiers

The four areas the longevity work follows: Heart & circulation; Strength & structure; Metabolism & blood; Sleep, stress & mind. Measured once a year, watched all year.

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HRV

Heart-rate variability: beat-to-beat variation in heart rhythm, read each morning as a trend against your own baseline; an input to the readiness score.

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Limiter

A priority identified from the assessment that guides the next training block.

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Performance Twin

Sainath’s model of your measurements and training history, used to support coaching decisions and explain their inputs.

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Rate of force development

How quickly force rises during a contraction.

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Readiness score

One number each morning from HRV, sleep, yesterday’s load and their trend: push, maintain or repair, with the reason stated.

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Re-test

The same battery twelve weeks later under the same conditions, read side by side.

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S0 (non-approved substances)

The first section of WADA’s Prohibited List: any pharmacological substance with no current approval from a government health authority for human use is prohibited at all times, named or not.

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M1 (manipulation of blood and blood components)

The section of WADA’s Prohibited List covering blood doping: transfusions, red-blood-cell products and artificially raising oxygen uptake, transport or delivery.

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Six pillars

The performance half of the assessment: Speed; Strength & power; Endurance; Body composition; Recovery; Mobility & resilience. Each measured and trainable; any one can be the limiter.

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VO₂max

The highest rate of oxygen use measured during a graded exercise test; one measure of cardiorespiratory fitness.

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Repetitions in reserve (RIR)

How many more repetitions were possible when a set stopped; most sets here finish one to three short of failure.

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Therapeutic use exemption (TUE)

Permission from the relevant anti-doping organisation to use a prohibited medicine for a documented medical condition, under its criteria.

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Strict liability

An athlete is responsible for prohibited substances found in their sample, regardless of intent. Supplement certification cannot remove all contamination risk.

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Energy availability

The energy left for normal function after training: intake minus exercise expenditure, per kilogram of lean mass. Too low for too long costs hormones, bone, immunity and performance.

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Minimal detectable change

A threshold used to distinguish measured change from expected measurement error.

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Monitoring Program (WADA)

Substances WADA watches without prohibiting them: caffeine in competition and the GLP-1 medicines semaglutide and tirzepatide, among others. Monitored is not banned.

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Velocity-based training

Setting strength work by bar speed rather than a fixed percentage of a one-repetition maximum; a set ends when speed drops by an agreed amount.

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