THE INTELLIGENCE
Eight experts think. One coach decides.
Anyone can put a wellness prompt in front of a language model. This is what sits underneath CREST instead: the evidence each specialist works from, how the system reasons when it doesn't know, and the point at which it stops.
Not a chatbot with a wellness prompt in front of it.
Real Science. Real Solutions, Real Results.
Eight specialists, arbitrated into one answer.
Each returns a structured finding against published clinical work. The coach applies precedence where they conflict.
It remembers what you have already tried.
Prior injuries, bloodwork over months, every change you made — so it tests one thing at a time instead of starting over.
Thin data asks for more. It never fills the gap.
Confidence is scored on how complete and recent the picture is. When it is thin, CREST asks for another input or more time before it acts.
WHAT'S UNDERNEATH
What each one is expert in.
Each is expert in one part of how you function, and each returns a structured finding rather than an opinion — what it observed, what it means, and how confident it is. None of them speaks to you directly. They report to the coach.
MIND
Resilience · Focus · Belonging
MINDFUL
Stress load, emotional regulation, and the habits underneath the behaviour.
COGNITION
Focus, mental fatigue and decision capacity. What you can handle today, and when your good hours are.
IDENTITY
Motivation and adherence. The gap between what you said you would do and what you did.
The research behind this
| Cognitive behavioural therapy | American Psychological Association clinical guidelines |
| Habit formation and cue-reward mechanisms | Current Opinion in Psychology, 2021 |
| Mindfulness and stress reduction | JAMA Internal Medicine meta-analysis, 2014 |
| Self-determination theory | Deci and Ryan |
| Neuroplasticity and synaptic learning | Kandel, Neuron, 2001 |
| Chronic stress and prefrontal control | Arnsten, Nature Reviews Neuroscience, 2009 |
| Social bonding and autonomic regulation | Feldman, Biological Psychiatry, 2017 |
BODY
Readiness · Recovery · Growth
SLEEP
Duration, timing, quality and debt. The pattern, not last night in isolation.
TRAINING
Load against recovery. Whether what you are asking of yourself matches what you can absorb.
BODY
Movement, pain, soreness, readiness. HRV, and the drop that shows up before you know you are getting sick.
The research behind this
| Resistance training standards | NSCA position statement |
| Acute to chronic workload ratio | Gabbett, British Journal of Sports Medicine, 2016 |
| Heart rate variability standards | Task Force, European Heart Journal, 1996 |
| Cold exposure and catecholamine response | Cell Reports Medicine, 2021 |
| Sauna and cardiovascular recovery | JAMA Internal Medicine, 2018 |
| Exercise-induced BDNF and mood | Neuroscience and Biobehavioral Reviews, 2015 |
| Sleep and recovery | American Academy of Sleep Medicine clinical practice guidelines |
BIOLOGY
Fuel · Chemistry · Biomarkers
NUTRITION
Fuelling and timing against your goals and today's demands, and what the gaps are costing you.
CLINICAL & NEURO
Medication timing, bloodwork and biomarkers over months. Interactions, red flags, and the point at which something needs a qualified person.
The research behind this
| Mediterranean diet and longevity | PREDIMED trial, New England Journal of Medicine, 2018 |
| Meal timing and circadian alignment | British Medical Journal, 2020 |
| Gut-brain axis and mood | Cryan and Dinan, Nature Reviews Gastroenterology and Hepatology, 2012 |
| Allostatic load and systemic overload | McEwen, PNAS, 2001 |
| Dopamine signalling and motivation | Schultz, Neuron, 2016 |
| Serotonin and mood stability | Young, Journal of Psychiatry and Neuroscience, 2007 |
| HRV as a recovery metric | Shaffer and Ginsberg, Frontiers in Public Health, 2017 |
| Biomarker and medication reference | NIH MedlinePlus, RxNorm |
This is what gives each specialist its guardrails — what it is allowed to determine, and how it assesses what it is seeing. Every finding traces back to established clinical and peer reviewed work, not to opinion.
THE COACH
Eight findings. One answer.
The specialists disagree constantly, because your goals disagree. Training says push. Body says the shoulder has flagged four weeks running. Sleep says you’re running on five hours. Nutrition says you’re under-fuelled for any of it.
The coach holds all eight findings at once, weighs them against your history and everything you’re working toward, and decides what today actually needs to be. Then it tells you why, in one voice.
That is the entire product. Not eight assistants. One answer, with eight things behind it.
You never manage the specialists. You talk to CREST.
The research behind this
| Allostasis and adaptation | Sterling and Eyer |
| Hormonal and behavioural homeostasis | McEwen and Wingfield, Hormones and Behavior, 2010 |
| Human performance optimisation | National Academies of Sciences, 2020 |
| Behavioural insights | World Health Organization |
WHAT IT HOLDS
It remembers where you're going, and everything you have already tried.
Both change constantly, and nothing else in your life keeps track of either. A GP sees you twice a year. An app resets every morning. You will not remember what you changed three weeks ago.
WHERE YOU'RE GOING
Goals · Constraints · The next one
- One long-term goal that has barely moved in a year.
- A handful of medium ones serving it, and a churn of short ones that change every week.
- Constraints, not just goals. A broken toe, a deadline, a bad stretch of sleep. Constraints resolve and close. Goals move as you reach them.
- Reach the long-term goal and CREST proposes the next one. That is the system working, not the plan ending.
WHAT YOU HAVE ALREADY TRIED
Candidates · One change · Elimination
- You wake at 3am most nights and you have no idea why.
- It could be cortisol, carbohydrate, alcohol, room temperature, training too late. Nobody can tell you which from a single night.
- So it does not guess. It names the candidates, triages which to test first, changes one thing, and tracks the result. If nothing shifts, it moves to the next.
- Low confidence produces a question, not a guess dressed up as an answer.
Process of elimination, run properly, with something keeping track. That is the part you would never do alone.
IN PRACTICE
Three days. Same system. Three different answers.
The value is not that it responds. It is that it responds differently, for the right reasons.
SCENARIO 01 — THE GOOD DAY
Three nights above target, protein on track, and the shoulder quiet for four days. Everything is clear, so push. These days are rarer than you think.
SCENARIO 02 — THE BAD DAY
Nine hours without food on the back of two short nights. You didn't fail. The fuel plan did. Session off, eat now, and a reminder set before the window you keep missing.
SCENARIO 03 — THE PATTERN
Four weeks of shoulder pain after pressing, in a shoulder with three prior repairs. It doesn't start in the joint. Thirty minutes daily, pressing halved, and a physio who knows the history. Ten days of slower progression, or two months out.
Illustrative scenarios. Not a real member, and not real health data.
THE CREST SCORE
A number that means something, measured against you.
CREST scores two different things, because they move at different speeds and conflating them makes both useless.
READINESS
How you are today. Mind, body and biology, each scored. Moves daily, measured against your own baseline rather than a population. A bad night moves it. That is the point.
CAPACITY
What you have built. Body composition, bloodwork and sustained trend over months. It does not move because you slept badly, because that is not what it measures.
We do not show a biological age. The science does not support one, and the score is measured against your own baseline instead.
