YOUR PERFORMANCE TEAM.
26 SPECIALISTS.

A performance team in your pocket.

Build strength, change your body or fuel a full day. Working out what to eat, how much and when should not become another job.

KEXBI draws on a team of 26 specialist software agents to connect your fuelling needs, timing and quantities of your preferred pantry foods. Its Chef creates meals from those ingredients and amounts, shaped around your tastes and kitchen.

A tailored week of meals, drinks and workout fuel, with preparation and one shopping list. Food logging is optional; proposed changes are yours to review.

Register for launch →See the working
370 rules · 95 peer-reviewed sources · 112 calculations · 9 checks before you see it
Training partners between sets in the gym
01 · WHO BUILDS IT

Your needs give the numbers their purpose.

Weekly strategy informs each day. Calculations shape the food, and the chef turns planned ingredients into meals. Open the working behind the result.

THE OUTPUT, OPENED UP

One saved day. Tap any number.

See what shaped it, how it was worked out and where it fits in the plan.

Training day · Upper body109.1 KG · STRENGTH TRAINING
DAY TOTAL Calories planned for the day 2,873
TRAINING Added to the day for training 295
PROTEIN Protein across the training day 229 g
HYDRATION Water planned through the day 4.7 L
AFTER TRAINING Beef fillet with cannellini rice 44 g
YOUR PORTION Chicken with rocket salad, cooked 160 g
SUPPLEMENTS Creatine with the post-workout meal 5 g
PLAN FIT How closely the food meets the target −3 kcal
Tap a number to open its working.
THE WORKING · SECTION 02
2,873

Where this day’s calories come from.

Resting energy, calculated from lean mass2,399
Everyday movement+480
Adjustment for the body goal−301
Training contribution+295
Daily target2,873
Set by the head coach and sports scientistThe target estimates this person’s needs. The saved food plan delivers 2,870 kcal, just 3 kcal below it. Planned food and estimated need are shown separately.
Calculation reference: saved protocol for 13 October 2026. These figures belong to a separate person, not the athlete shown in the photography.Follow the journey from inputs to plan ↓
Compare six illustrative days, from rest to a marathon

Built like a performance team.

26 specialists on the roster, organised into six jobs. A build draws on the ones its week needs, so not every specialist works on every plan. Each card links to the stages of the journey it shapes.

01 · RECOVERY The recovery coach Reads how you slept and recovered, after the night, against your own baseline.
Time the day ›Check and adapt ›
02 · TIMING The performance nutritionist and Chrono Architect Plans eating windows around waking, training and sleep, then carries them into the timed day.
Plan the week ›Time the day ›
03 · FUEL The head coach and the sports scientist Work out what each day needs and plan the week as a whole.
Start with you ›Plan the week ›
04 · SAFETY The safety reviewer Checks the plan against fuelling limits and the time available to digest.
Plan the week ›Check and adapt ›
05 · ADAPTATION The coach who checks in every day Keeps the plan true when your training or your weight moves.
Plan the week ›Check and adapt ›
06 · FOOD REALITY The chef, the meal-prep planner and the shopper Turn the numbers into real food from your own kitchen.
Choose the food ›Get it ready ›

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.

FROM YOUR WEEK TO YOUR PLATE

See how your week becomes a plan.

The week is planned ahead. Meals, training fuel, preparation and the night’s recovery are considered together, with room to review changes as they happen.

Start with youPlan the weekChoose the foodTime the dayGet it readyCheck and adaptAll 13
01
START WITH YOU

Start with the person, not a standard day.

Your body measurements, goal and training focus set the starting point. Food preferences, cooking choices and your usual wake and sleep times give the plan its practical boundaries.

How this is worked out+
02
PLAN THE WEEK

Plan the week, including when to fuel.

Chrononutrition means planning when to fuel as well as how much. Confirmed sessions, rest days, wake times and intended sleep shape the week, so eating windows are considered before foods and quantities are chosen.

How this is worked out+
03

Work out the energy for each day.

Resting needs, everyday movement, your body goal and training all contribute. A lifting day, long run and rest day each get their own calculation.

How this is worked out+
04

Set protein, carbohydrate and fat together.

Your training focus gives the plan its starting profile. The work ahead and your body goal shape the daily amounts, then those amounts are distributed across meals and workout fuel.

How this is worked out+
05
CHOOSE THE FOOD

Turn the targets into food you want to eat.

Food preferences and cooking choices shape the dishes. Ingredient quantities are calculated for the meal, with the preparation state taken into account so you know what to weigh.

How this is worked out+
06
TIME THE DAY

Carry the timing plan into your day.

The eating windows set during planning become meals, session fuel and drinks at specific times. Estimated digestion helps determine what fits before training, while intended bedtime informs the evening.

How this is worked out+
07

Work out what to take into the session.

For sessions that need it, carbohydrate, fluid and sodium become practical servings and timed feeds. Your chosen fuel products help determine what goes in the bottle or kit bag.

How this is worked out+
08

Plan drinks through the day, with the night in mind.

Drinks are placed around waking and training, with larger amounts earlier and a taper towards bedtime. The aim is to cover the day’s needs without leaving a large catch-up drink for late evening.

How this is worked out+
09

Give overnight recovery a place in the plan.

Evening meal timing, caffeine and any pre-bed food are considered together. An evening protein feed can help meet the day’s needs and support overnight recovery when it has a role.

How this is worked out+
10
GET IT READY

Make the meal possible in the time you have.

Only 15 minutes between finishing training and eating? Plan the preparation earlier, so that gap is for reheating, finishing and serving. Cooking fresh can still include getting a particular meal ready the day before.

How this is worked out+
11

Bring shopping and preparation together.

The week’s meals become one shopping list and a plan for getting food ready. See what to cook ahead, what to finish on the day and what needs moving from freezer to fridge.

How this is worked out−
GOES INThe week’s meals and your preparation choices.
WHAT IS WORKED OUTShopping quantities, and what to cook ahead, store, reheat, assemble and finish.
COMES OUTOne shopping list and a preparation plan with serving steps.
WHY IT HELPSOne trip, and nothing left to work out on the day.

Quantities are gathered across the week. Each prepared portion carries storage, thawing and reheating steps.

Specialist roles: Shopper, meal-prep planner · Feeds into 12 · Sources: Food Standards Agency guidance for storage and reheating.

12
CHECK AND ADAPT

Check the plan and show the working.

Targets, delivered food, timing and recorded constraints are reviewed. You can open the numbers to see the result and any difference from the plan.

How this is worked out+
13

Review changes without starting the week again.

A moved workout, a bigger session or a poor night can change what the day needs. KEXBI considers the new information alongside the existing plan, explains a proposed adjustment and leaves the choice with you.

How this is worked out+
Sources and evidence boundaries+
HOW THE DECISIONS DEPEND ON EACH OTHER

One week, read left to right.

Select any decision to open it above.
START WITH YOU 01Your starting point
→
PLAN THE WEEK 02Week & nutrient timing03Daily energy04Macros
→
CHOOSE THE FOOD 05Dishes and portions
→
TIME THE DAY 06Meals & timing07Workout fuel08Fluids09The evening
→
GET IT READY 10Time to cook11Shopping and prep
→
CHECK AND ADAPT 12Checks13Adjustments
Check and adapt → Plan the week. New training, sleep or progress information returns to the plan as a proposed adjustment you review.Sleep is read after the night, never predicted.
Man reviewing his day after strength training
02 · THE RIGHT AMOUNT

Where your calories come from.

Your measurements give the calculation a starting point. Your goal, everyday activity and training help determine how much energy the day is planned to provide.

Your focus starts it. Your training shapes the day.

Strength and power, endurance, hybrid or general wellness give the plan its starting point. Your body goal and scheduled sessions then shape protein, carbohydrate and fat for the day ahead.

01

Start with you.

Your training focus and body measurements set the starting profile. Building muscle, losing fat and maintaining weight bring different demands.

02

Read the work ahead.

Session type, duration and event status help describe the day’s load. Intensity also informs session-energy and workout-fuel calculations; it is not one universal multiplier for every macro.

03

Bring the amounts together.

Protein is reconciled with the existing baseline. Carbohydrate demand is considered alongside the energy budget and fat needs. The resulting targets become portions across the day.

Open the method and research

Protein: the engine combines a focus-specific starting rate, the day’s requested protein and an existing baseline. Body weight and lean mass have different roles; the displayed calculation identifies the basis used.

Carbohydrate: the engine first considers training demand. On lighter days that request is reconciled with energy remaining after protein and fat. On qualifying heavy days, fuelling can take priority over the planned deficit. The subtraction shown below explains this saved day, not a universal carbohydrate formula.

Research: Morton et al. (2018) examines protein supplementation and resistance-training adaptations. Burke et al. (2011) discusses carbohydrate availability for training and competition. These inform the principles; KEXBI’s exact focus rates, load bands and reconciliation rules are product implementation choices.

The same day, worked through.

109.1 kg, 93.9 kg lean mass. The saved calculation includes everyday movement, the body goal and training.

THE DAILY TARGET

2,873 kcal

Resting energy, calculated from lean mass2,399
Everyday movement+480
Adjustment for the body goal−301
Training contribution+295
Daily target2,873

The saved energy receipt adds up to the target. The food plan is a separate result: 2,870 kcal.

Explore training and body goals ›
WHAT THE FOOD DELIVERS

3 kcal below target

Daily target2,873 kcal
Saved food plan2,870 kcal
Protein delivered228 g
Carbohydrate delivered306 g
Fat delivered81 g

The saved build verdict passes with no failed build axes. A separate chef review recorded a breakfast preparation issue; a build pass is not a claim that every review was clear.

See how the plan is checked ›
PROTEIN WORKING

229 g

Body weight used109.065 kg
Strength baseline2.0 g/kg
Training-day factor2.1 g/kg
Rounded target229 g
Lean-mass cap291 g

This saved target uses body weight for the training-day calculation and lean mass for the cap. The two bases have different jobs.

See the planning limits ›
CARBOHYDRATE WORKING

307 g

Daily energy2,873 kcal
Protein: 229 g × 4−916 kcal
Fat: 81 g × 9−729 kcal
Energy remaining1,228 kcal
Carbohydrate: 1,228 ÷ 4307 g

Training demand is considered first, then reconciled with this day’s energy budget. Here, 1,228 kcal remains after protein and fat, giving 307 g carbohydrate. The final target is specific to this day.

Explore the daily plan ›
Man serving a meal in his kitchen
03 · THE RIGHT FOOD

How the food fits you.

Your pantry gives KEXBI the foods you prefer and usually stock. Their nutrients, preparation state and timing suitability help determine which ingredients fit a meal and in what amounts.

BEHIND YOUR FOOD CHOICES

Same ingredient. A deeper understanding.

A macro entry tells you what a food contains. KEXBI connects that nutrition to how the ingredient behaves, when it fits and how it is prepared. Explore how ingredients contribute to the dishes in Your week.

OmnivorePescatarianVegetarianVegan
Paprika chicken with sweet potato
FROM PAPRIKA CHICKEN WITH SWEET POTATO

Chicken breast fillet

THE MACRO ENTRY · PER 100 G, RAW
Energy109 kcal
Protein23.25 g
Carbs0 g
Fat1.81 g

Useful for counting. These four numbers alone cannot describe cooking state, digestion or suitability around training.

KEXBI ALSO KNOWS
01Protein quality
Lean protein, with leucine recorded alongside total protein.For you · Support muscle repair and growth
02Digestion
Solid food, moderate digestion, considered alongside the rest of the meal.For you · Time for your meal to settle
03Eating window
Meal suitability and near-training suitability differ.For you · Fuel matched to the eating window
04Portion accuracy
Calculated for grilling: 100 g raw maps to about 70 g cooked. Trackers keep raw and cooked as separate entries and let you log the wrong one.For you · Know what to weigh
05Beyond macros
Iron, magnesium and zinc recorded.For you · Consider more than total protein
06Your kitchen
Poultry, cook-through required. That reaches the chef’s brief.For you · A portion you can cook well
One ingredient record connects nutrition, cooking state, timing suitability and the instructions the chef needs.
See the dish in Your week ›Shadow Pantry record

Sources: USDA, CoFID, BLS, Open Food Facts, manufacturer labels, University of Sydney GI data. Calculations use the recorded food state and estimated cooking yield.

HOW THE CHEF BUILDS THE DISH

Calculated fuel. Culinary skill.

KEXBI calculates ingredient amounts around the meal’s planned protein, carbohydrate and fat, drawing on your preferred pantry foods. The Chef creates the dish from those ingredients and quantities, shaped by your tastes, kitchen and cooking choices.

01 · THE NUTRITIONAL BRIEF

One brief for the whole dish.

The Chef receives the planned ingredients and quantities together. Your taste profile, equipment and available cooking time guide how they become a meal.

02 · NOTHING EXTRA

Nothing added that is not on your plate.

Cooking instructions work with the ingredients and amounts accounted for in the meal. Where suitable, dry cooking or a covered pan can replace added cooking fat.

03 · THE PAN

Slowest first. The main food cooks alone.

Where the dish calls for searing, the main ingredient can rest while the vegetables use the pan. Herbs and acid bring the finishing flavour, with the sequence shaped by the ingredients.

04 · SEASONING

Seasoned in sets, towards your taste.

Flavourings that belong together, drawn from your chosen taste profiles and spice shelf, work within the ingredients accounted for in the meal.

05 · VEGETABLES

Every vegetable cooked by its family.

Techniques suit the dish: mushrooms can release their water before browning, greens keep their colour, and slower-cooking roots can start first.

06 · FISH AND EGGS

Fish gets the pan to itself. Eggs get a method.

For a pan-seared fish dish, vegetables can cook first and be lifted out before the fish. Eggs may be soft, hard, poached or folded, with instructions for the chosen method.

07 · PASTA AND SAUCE

Pasta finished in its own water.

Reserved pasta water can bring a sauce together. Pan sauces use the ingredients accounted for in the meal, with the method chosen for the dish.

08 · COOKING AND FINISHING

Clear cooking cues. Fresh finishing touches.

Follow the cooking, storage and reheating guidance for the dish, informed by Food Standards Agency guidance. For prepared meals, finishing touches such as lemon and herbs can go on after reheating.

HOW IT DECIDESSee the meals it builds →
Woman checking her daily plan beside breakfast
04 · THE RIGHT TIME

We do the timing. You get the time.

The time before training changes what is suitable to eat. KEXBI uses food properties and digestion estimates alongside your schedule to plan the meals and fuel around it.

WHEN IT WORKS

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.

PorridgeT-120 · breakfast
Energy gelduring · T-30
Wheypost-training
Cottage cheesepre-bed

The same food can suit one eating window and be a poor fit for another.

HOW LONG IT STAYS WITH YOU

Fuel timed around digestion and training.

The kind of protein, solid or liquid, how fast it digests. It is what stops a slow protein landing before a hard morning.

Whey, liquidfast · ~45 min
Chicken breast, solidmoderate · ~150 min
Casein, solidslow · ~240 min

Research-based digestion profiles help place fuel around your training.

WATER, TIMED THE SAME WAY

Every drink placed and sized.

A baseline from your lean mass, then fluid and sodium for each workout, set by your sweat. Drinks taper as bedtime nears.

During a workout0.8 to 1.2 L an hour
Morning after a short night+8% to +20%
From 3 h before bedtapering
From 2 h before bedsips only

Fluid is personalised to your body and workout. During long efforts, drink to thirst.

From an hourly target to a feed.

A separate long-run example from the app shows how workout totals become practical servings. It is not the saved strength day above.

Carbohydrate across 2.5 hours150 g ÷ 2.5 = 60 g/h
Six feeds in that plan150 g ÷ 6 = 25 g/feed
Planned fluid across the workout2.0 L ÷ 2.5 = 0.8 L/h

These are the amounts in this example. Workout demand and product limits shape carbohydrate delivery; fluid and sodium are considered together using the available body, sweat and environmental inputs. Mixing water counts towards the fluid plan. The screenshot does not show a sodium total.

See your workout fuel in practice →
How absorption limits shape the plan →Read the timing science →
Man reviewing his plan after strength training
05 · CHECKED FIRST

The food and the targets, checked together.

Targets, ingredient amounts, meal timing and preparation need to agree. Explore the checks and the limits, then see what the saved result actually delivers.

01 · SUPPORTS THE WORK

Does it support the work?

The plan checks that your fuel supports training and recovery while staying within its nutritional limits. When under-fuelling is detected, it works to restore the energy you need and flags when your goal is limiting it.

02 · FITS YOUR DAY

Does it fit your day?

Meals, workout fuel and drinks are coordinated around your training and eating windows. A failed check sends the plan back for revision.

03 · NUMBERS HOLD UP

Do the numbers hold up?

The finished plan is checked against your targets. If the selected foods cannot meet one, it shows which macro is short, by how much, why and what would help close the gap.

WHEN TIME BEFORE TRAINING IS TIGHT

One coordinated plan, around the time you actually have.

01An early workout leaves less time to eat. Your usual wake time and workout start leave a shorter eating window than a full pre-workout meal needs.
02The fuel changes with the window. KEXBI adjusts the carbohydrate amount and protein allocation to fit the available time, and which foods are suitable.
03The rest of the day stays connected. Carbohydrate deferred from that pre-workout window is carried into the recovery calculation.
04You get one coordinated plan. What you eat before training and what follows it are worked out together.
THE PLANNING LIMITS
0.66 g/kgFat floor
100 gCarb floor
1,500 / 1,200Calorie floor, men / women
1% / weekPlanned weekly loss limit
3.1 g/kg leanProtein ceiling

Helms 2014 and Whittaker 2021 for the fat floor, Institute of Medicine 2005 for the carbohydrate floor. These planning limits guide the calculations and checks. Open the example to see its targets, delivered food and recorded result. 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.

HOW IT DECIDESWhy context beats macros →See a goal and a training block agree →
EVERYTHING IN THE PLAN

Shaped by you. Worked out for you.

13 shaped by you. 27 worked out for you. Open a group to explore every part.

SHAPED BY YOUShaped by youWhat you bring. Your body, your training and your goal set the numbers. 06 +
SHAPED BY YOUYour kitchenFoods you prefer, flavours you enjoy and choices you control. 07 +
WORKED OUT FOR YOUOne planWhat you get, every day and for the whole week. 16 +
WORKED OUT FOR YOUWhen your day changesWhat happens when the day does not go to plan. 05 +
WORKED OUT FOR YOUGoverned byThe rules every plan has to pass before you see it. 06 +
Next: The right amount →
Training partners between sets in the gym
LAUNCHING NOVEMBER

Ready to stop guessing?

Cohort 002 is testing KEXBI now, ahead of the public launch in November. Leave your email and we will tell you the day it opens.

KEXBI launches in November. Contact us about access.

See how it works ›