Fuelled to hit it.
Four things the engine is for. Everything below is the working behind them.
You can't build on empty.
Push hard on too little fuel and your body quietly stops adapting. No new muscle, no faster pace, just a plateau you can't explain. KEXBI tops the energy back up before your progress pays for it.
Finish as strong as you started.
Fading in the back half is often a fuelling problem, not a fitness one. KEXBI paces in what your gut can absorb while you go, so you fuel the workout while it is happening.
Hold your muscle through a cut.
Most plans cut everything at once, protein included. KEXBI raises your protein as your calories come down. You lose fat and keep the muscle you fought for.
Keeps up as you get fitter.
The number that fits you today is wrong within weeks. KEXBI moves the target with your weight trend rather than leaving you on a stale estimate.
Why your training isn't showing up yet.
Eat back everything your watch reports and you can train hard for months while going nowhere. Three figures come off one workout, and only one of them is dinner.
One real 73 minute trail run. Of the 497 calorie gap, only 96 was behaviour. Compensation curve: Careau et al. 2021, n=1,754.
Nothing sits heavy when you train.
You stop learning the hard way which breakfast ruins a morning run. KEXBI knows when each food works, and how long it sits with you.
Every food scored for when to eat it
A score for eleven moments in a day, from two hours before training through to pre-bed. The porridge that works at 6am never turns up at 5:45pm.
You never train on a stomach that is still working
The kind of protein, solid or liquid, how fast it digests. It is what stops a slow protein landing before a hard morning.
Estimated from primary literature, not measured in a lab. The minutes are there to read, not to run the plan.
The right food, at the hour it actually works.
A calorie count is the baseline. What matters is how a food behaves in your body, and when it belongs in your day.
The same tub of whey protein, in both worlds:
Cottage cheese
Feeds your muscles slowly through the overnight fast.
Whey shake
Fast protein for the hours after hard training, when it is easiest to hit your recovery dose.
Energy gel
Fuel you can carry, for the middle of a long effort.
Sources: USDA, CoFID, BLS, Open Food Facts, manufacturer labels, University of Sydney GI data. Portions adjust for how you cook it, so a drizzle of oil is never a bowl of it.
Your longest workouts, fuelled by the hour.
The longer you go, the more fuelling decides whether you finish strong or fall apart.
Worked out from your body, then built from three parts
From your own height, weight and body fat, not a generic profile. Then resting burn, everyday movement and the day's training.
On a rest day the training block is zero and the total drops to 1,758. Whatever the day, there is always enough fuel left for your body to turn the training into progress.
Your snack never lands inside a workout, or 40 minutes before dinner.
Thirteen of the twenty-six systems build a day in stages, each able to overrule the last. One afternoon snack, four decisions.
A validator can send the plan back
The finished plan is checked against a rulebook and sent back if it fails. Safety outranks everything: when under-fuelling is detected, the energy goes back in.
We record the miss rather than hide it
When a target cannot be hit with the food you own, we do not fudge it. The plan records which macro it missed, by how much, why, and what would fix it.
One answer, and you can check any part of it.
Six groups of systems check the day before it is set. You can inspect any one of them, and you never have to.
Built on work by Burke, Areta, Jeukendrup, Aragon and Schoenfeld and dozens more. Where a rule rests on published research, we name the source so you can read it yourself.
KEXBI's safety limits are guidance to keep you fuelled, not medical advice or a diagnosis. If something feels off, speak to a clinician or a sports dietitian.
Ready to stop guessing?
Cohort 001 is in testing now. Join the list for early access before public launch, and we'll email you the moment your place is ready.