Strathlon Library
Everything worth knowing, explained properly.
Evidence-based guides, product deep-dives and plain-English explainers for every number the app shows you. Filter to what you need.
App & features
Blog
Getting started: your first week with Strathlon
A quick tour of the five tabs and how your first week fits together. Everything here is free.
App & features
Blog
Reading your charts: weight, deficit and progress photos
Weight, deficit and progress photos — how to read the trend, the range and the away shading.
App & features
Blog
Your schedule and multi-sport setup
Pick your sports, set a primary, and see only what's in season this week. Plus sessions, timers and away mode.
App & features
Blog
Snap your lifting weights, and 'explain my gap'
Fill in your working weight from a photo of the dumbbell, plate or machine — and when predicted and actual weight drift apart, ask your Coach to explain the gap. Premium.
App & features
Blog
Back up and sync with iCloud
Keep your training and Tracker history in sync across your devices, privately — while your cycle data stays put. Premium.
For women
Blog
Training and eating with your cycle
Four separate opt-ins let the app flex with your cycle — and your cycle data never leaves your phone.
Training
Stat explainer
Consistency
Your streaks and completion rate — the single strongest predictor of progress.
Training
Stat explainer
Training volume
Total work done, and the science of progressive overload — the main driver of strength and muscle.
Training
Stat explainer
Sessions per week
The simplest lever on progress, and what advances you through your plan's phases.
Training
Stat explainer
Strength progress
Per-exercise PRs and rep growth — the clearest, most scale-proof evidence your training works.
Training
Stat explainer
Rest between sets
How your actual rest compares to your plan — and why rest length shapes strength versus conditioning.
Training
Stat explainer
Work-to-rest ratio
How dense your session is — how much you spent working versus resting — matched to your goal.
Nutrition
Stat explainer
Energy balance
Calories in versus out — the biggest lever on weight change, plateaus and water weight, honestly framed.
Nutrition
Stat explainer
Weight trend
Your real weigh-ins versus what your deficit predicts — reading the signal beneath the daily noise.
Nutrition
Stat explainer
Protein
Protein per kilogram — your nutrient shield for keeping muscle while you're in a deficit.
Nutrition
Stat explainer
Active burn
The active calories recorded in Apple Health — and the honest truth about wearable accuracy.
Training
Stat explainer
Average heart rate
A quick gauge of training intensity — why a falling trend at the same effort can mean you're fitter.
Recovery
Stat explainer
Heart-rate recovery
How quickly your heart rate drops after effort — a scale-free marker of fitness and stress.
Recovery
Stat explainer
Sleep
Nightly hours and deep sleep — when you actually recover, build muscle and regulate appetite.
For women
Stat explainer
Cycle phase
An opt-in, on-device view of your menstrual cycle alongside weight and energy — a water bump read as exactly that.
Training
Guide
How muscle actually grows
Progressive overload, effort and recovery — what really drives strength and size, with a worked overload log.
Nutrition
Guide
Fat loss is one equation
Energy balance, deficit size and patience — the honest maths of losing fat, no crash-diet promises.
Nutrition
Guide
Eating for results, without a diet
A simple half-plate method built around protein, fibre and portions — results without weighing every gram.
Recovery
Guide
Recovery is where results happen
Sleep, rest days and stress — why recovery, not more training, is what unlocks progress.
Training
Guide
The habit beats the perfect plan
Consistency over perfection — the adherence maths behind almost every result, and how to never miss twice.
For women
Guide
Training and eating with your cycle
How each phase shifts water, cravings and strength — and how to keep training through it.
Supplements
Guide
Supplements: what the evidence supports
Creatine, protein, vitamin D, electrolytes — what good evidence backs, and what's safe to skip.
Myths
Guide
Fitness myths, debunked
Spot reduction, the fat-burning zone, detoxes and 'toning' — the myths that waste time, corrected against the science.
App & features
Blog
Getting the most out of your AI Coach
What your coach already knows, the prompts that work best, and how to use 'explain my gap'.
App & features
Blog
One coach for training and nutrition
Why one plan across training, food and recovery beats three apps that can't talk to each other.
App & features
Blog
Calorie tracking, without the chore
Snap a photo or describe a meal in a sentence — tracking you'll actually keep up with.
Training
Blog
Your gym plan should know your sport
How Strathlon shapes your gym work around the sport you actually play — not a generic 3×10.
App & features
Blog
Your Apple Watch + Strathlon
Live heart rate, your workout on your wrist, hands-free control — and what's free versus premium.
App & features
Blog
When your plan ends — or you hit your goal
What happens next: maintenance, a fresh goal, or keep going — plus falling a couple of kilos short.
Sports fuelling
Guide
Fuelling for Running
A deep, evidence-based guide to fuelling for running — daily carbohydrate, the pre-run meal, in-race carbs per hour, multiple-transportable…
Sports fuelling
Guide
Fuelling for Cycling
A deep, evidence-based guide to fuelling for cycling — daily carbohydrate, the pre-ride meal, on-the-bike carbs per hour, multiple-transportable…
Sports fuelling
Guide
Fuelling for Triathlon
A deep, evidence-based guide to fuelling for triathlon — daily carbohydrate, race-week carb loading, the pre-race meal, fuelling across…
Sports fuelling
Guide
Fuelling for Swimming
A deep, evidence-based guide to fuelling for swimming — daily carbohydrate for high training volumes, fuelling twice-a-day sessions, the pre-pool…
Sports fuelling
Guide
Fuelling for Rowing
A deep, evidence-based guide to fuelling for rowing — daily carbohydrate for high training volumes, protein for power output, fuelling the 2k and…
Sports fuelling
Guide
Fuelling for Skiing & snowboarding
A deep, evidence-based guide to fuelling long cold days skiing and snowboarding — why cold and altitude raise energy needs, steady all-day…
Sports fuelling
Guide
Fuelling for Boxing
An evidence-based guide to fuelling for boxing: making weight the safe way with gradual fat loss, the real risks of hard water cuts, how to…
Sports fuelling
Guide
Fuelling for MMA
A deep, evidence-based guide to fuelling for MMA — fuelling striking and grappling in camp, protein to protect muscle during a cut, making weight…
Sports fuelling
Guide
Fuelling for BJJ & grappling
An evidence-based guide to fuelling for Brazilian jiu-jitsu and grappling: carbohydrate for high-intensity rolling, protein for repair, hydration,…
Sports fuelling
Guide
Fuelling for Wrestling & judo
An evidence-based, safety-first guide to fuelling for wrestling and judo — the real dangers of rapid weight cutting, gradual weight management,…
Sports fuelling
Guide
Fuelling for Football (soccer)
An evidence-based guide to fuelling football (soccer): repeat-sprint glycogen depletion over 90 minutes, carbohydrate loading before a match, the…
Sports fuelling
Guide
Fuelling for Rugby
A deep, evidence-based guide to fuelling for rugby — daily carbohydrate for repeat high-intensity work, protein to build and hold match mass,…
Sports fuelling
Guide
Fuelling for Field hockey
A deep, evidence-based guide to fuelling for field hockey — the repeat-sprint demands of four quarters, muscle glycogen across a match, daily…
Sports fuelling
Guide
Fuelling for Basketball
An evidence-based guide to fuelling for basketball — a repeat-sprint, jump-heavy indoor sport.
Sports fuelling
Guide
Fuelling for Netball
A deep, evidence-based guide to fuelling for netball — the stop-start court demands, daily carbohydrate, the pre-game meal, quarter-time top-ups,…
Sports fuelling
Guide
Fuelling for Handball
A deep, evidence-based guide to fuelling for handball — an indoor intermittent team sport of repeated sprints, jumps and throws.
Sports fuelling
Guide
Fuelling for Water polo
A deep, evidence-based guide to fuelling for water polo — the repeated-sprint glycogen demand of eggbeater, sprint swims and wrestling, daily…
Sports fuelling
Guide
Fuelling for Lacrosse
A deep, evidence-based guide to fuelling for lacrosse — a running-heavy, repeat-sprint field team sport.
Sports fuelling
Guide
Fuelling for Futsal
A deep, evidence-based guide to fuelling for futsal — the very high intensity of indoor 5-a-side, why it drains glycogen fast, daily carbohydrate,…
Sports fuelling
Guide
Fuelling for American football
A deep, evidence-based guide to fuelling American football — energy for big, collision-loaded bodies, daily carbohydrate for repeated explosive…
Sports fuelling
Guide
Fuelling for Touch rugby
An evidence-based guide to fuelling for touch rugby — a non-contact, repeat-sprint field sport.
Sports fuelling
Guide
Fuelling for Ice hockey
A deep, evidence-based guide to fuelling for ice hockey — a shift-based power sport.
Sports fuelling
Guide
Fuelling for Ultimate frisbee
A deep, evidence-based guide to fuelling for Ultimate Frisbee — a repeat-sprint field sport played as all-day tournaments.
Sports fuelling
Guide
Fuelling for Volleyball
A deep, evidence-based guide to fuelling for volleyball — the repeat-jump power sport.
Sports fuelling
Guide
Fuelling for Tennis
A deep, evidence-based guide to fuelling tennis — the stop-start intermittent demands, carbohydrate before and during long matches, sweat and…
Sports fuelling
Guide
Fuelling for Padel
A plain-English, evidence-based guide to fuelling for padel — a moderate intermittent doubles racquet sport.
Sports fuelling
Guide
Fuelling for Squash
A deep, evidence-based guide to fuelling for squash — daily carbohydrate, the pre-match meal, carbs during long matches and tournaments, and the…
Sports fuelling
Guide
Fuelling for Badminton
A deep, evidence-based guide to fuelling for badminton — daily carbohydrate for repeated explosive rallies, the pre-match meal, carbs per hour in…
Sports fuelling
Guide
Fuelling for Table tennis
A deep, evidence-based guide to fuelling for table tennis — a fast-reaction, skill-based sport with a modest energy cost.
Sports fuelling
Guide
Fuelling for Golf
An evidence-based guide to fuelling for golf — a four-to-five-hour walk on foot where steady blood sugar, hydration and concentration matter more…
Sports fuelling
Guide
Fuelling for Archery
An honest, evidence-based guide to fuelling for archery — a precision skill sport with very low energy demand.
Sports fuelling
Guide
Fuelling for Gymnastics
An evidence-based guide to fuelling gymnastics — a strength-to-weight power and skill sport.
Sports fuelling
Guide
Fuelling for Rock climbing
A deep, evidence-based guide to fuelling for rock climbing — the strength-to-weight tension, the serious under-fuelling and RED-S risk in climbing…
Sports fuelling
Guide
Fuelling for Cricket
A deep, evidence-based guide to fuelling for cricket — daily carbohydrate and protein, the pre-match meal, steady blood sugar across a long…
Sports fuelling
Guide
Fuelling for Baseball & softball
A deep, evidence-based guide to fuelling for baseball and softball — honest carbohydrate needs for a low-intensity, explosive-burst sport, steady…
Sports fuelling
Guide
Fuelling for Polo
An evidence-based guide to fuelling for polo — why the rider's demand is moderate not endurance, steady daily energy, the pre-match meal, modest…
Sports fuelling
Guide
Fuelling for Fencing
A deep, evidence-based guide to fuelling for fencing — an explosive, intermittent sport inside a long tournament day.
Sports fuelling
Guide
Fuelling for Walking
An honest, evidence-based guide to fuelling for walking — why everyday walks need no special fuelling, hydration on longer and hotter walks, when…
Sports fuelling
Guide
Fuelling for CrossFit
A deep, evidence-based guide to fuelling for CrossFit and high-intensity functional training — daily carbohydrate to refill the glycogen that…
Sports fuelling
Guide
Fuelling for Gym classes
A plain-English, evidence-based guide to fuelling group fitness classes — HIIT, spin, bootcamp, circuits and body-pump.
Sports fuelling
Guide
Fuelling for Gym & home workouts
A practical, evidence-based guide to fuelling gym and home workouts — daily protein (~1.6–2.2 g/kg), protein per meal (~0.25–0.4 g/kg),…
Sports training
Guide
Strength & conditioning for Running
A deep, evidence-based strength & conditioning guide for runners — why heavy low-rep lifting and plyometrics improve running economy without adding…
Sports training
Guide
Strength & conditioning for Cycling
A deep, evidence-based strength & conditioning guide for cyclists — heavy lower-body strength for economy, efficiency and sprint power, a core and…
Sports training
Guide
Strength & conditioning for Triathlon
A deep, evidence-based guide to strength & conditioning for triathlon — heavy strength for swim, bike and run economy at a minimal effective dose…
Sports training
Guide
Strength & conditioning for Swimming
A deep, evidence-based dryland strength & conditioning guide for swimmers — lat/pulling power, rotator-cuff and scapular stability to prevent…
Sports training
Guide
Strength & conditioning for Rowing
A deep, evidence-based strength & conditioning guide for rowing — heavy leg-driven strength (squat, hip hinge, pulls) that transfers to stroke…
Sports training
Guide
Strength & conditioning for Skiing & snowboarding
A deep, evidence-based strength & conditioning guide for skiing — eccentric quad and single-leg strength, plyometric landing control, the anaerobic…
Sports training
Guide
Strength & conditioning for Boxing
A deep, evidence-based strength & conditioning guide for boxing — punch power through the whole kinetic chain, rate of force development…
Sports training
Guide
Strength & conditioning for MMA
A deep, evidence-based strength & conditioning guide for MMA — max strength and explosive power, grip, neck and hip work, mixed aerobic/anaerobic…
Sports training
Guide
Strength & conditioning for BJJ & grappling
A deep, evidence-based strength & conditioning guide for Brazilian jiu-jitsu — grip and pulling strength, isometric core and hip strength…
Sports training
Guide
Strength & conditioning for Wrestling & judo
A deep, evidence-based strength & conditioning guide for wrestling — full-body maximal strength and explosive power, grip, neck and posterior-chain…
Sports training
Guide
Strength & conditioning for Football (soccer)
A deep, evidence-based strength & conditioning guide for football (soccer) — heavy lower-body strength, sprint and acceleration, plyometrics…
Sports training
Guide
Strength & conditioning for Rugby
A deep, evidence-based strength-and-conditioning guide for rugby — maximal strength and power for collisions, neck and posterior-chain work, sprint…
Sports training
Guide
Strength & conditioning for Field hockey
A deep, evidence-based strength & conditioning guide for field hockey — posterior-chain and hip strength for the flexed stance, single-leg…
Sports training
Guide
Strength & conditioning for Basketball
An evidence-based strength & conditioning guide for basketball — lower-body power and plyometrics for the jump, single-leg and deceleration work…
Sports training
Guide
Strength & conditioning for Netball
A deep, evidence-based strength & conditioning guide for netball — single-leg strength, landing and deceleration control, change-of-direction…
Sports training
Guide
Strength & conditioning for Handball
A deep, evidence-based strength & conditioning guide for handball — lower-body power and change-of-direction, rotational and overhead throwing…
Sports training
Guide
Strength & conditioning for Water polo
A deep, evidence-based strength & conditioning guide for water polo — overhead throwing power, eggbeater hip and leg strength, rotator-cuff and…
Sports training
Guide
Strength & conditioning for Lacrosse
A deep, evidence-based strength & conditioning guide for lacrosse — sprint and change-of-direction strength, lower-body power and landing…
Sports training
Guide
Strength & conditioning for Futsal
A deep, evidence-based strength & conditioning guide for futsal — explosive lower-body power, single-leg and change-of-direction work…
Sports training
Guide
Strength & conditioning for American football
A deep, evidence-based strength & conditioning guide for American football — position-specific max strength, explosive power and Olympic-lift…
Sports training
Guide
Strength & conditioning for Touch rugby
A deep, evidence-based strength & conditioning guide for touch rugby — sprint and change-of-direction strength, single-leg and deceleration work…
Sports training
Guide
Strength & conditioning for Ice hockey
An evidence-based strength & conditioning guide for ice hockey — lower-body max strength and power for skating, hip and adductor work to protect…
Sports training
Guide
Strength & conditioning for Ultimate frisbee
An evidence-based strength & conditioning guide for ultimate frisbee — sprint and change-of-direction strength, single-leg and landing power…
Sports training
Guide
Strength & conditioning for Volleyball
An evidence-based strength & conditioning guide for volleyball — lower-body power and plyometrics for the jump, landing mechanics and…
Sports training
Guide
Strength & conditioning for Tennis
A deep, evidence-based strength & conditioning guide for tennis — rotational power, single-leg and change-of-direction strength, deceleration…
Sports training
Guide
Strength & conditioning for Padel
A deep, evidence-based strength & conditioning guide for padel — rotational power for the smash, multidirectional strength and deceleration for…
Sports training
Guide
Strength & conditioning for Squash
A deep, evidence-based strength & conditioning guide for squash — single-leg and lunge strength, deceleration and change-of-direction, rotational…
Sports training
Guide
Strength & conditioning for Badminton
A deep, evidence-based strength & conditioning guide for badminton — explosive lower-body power and reactive strength, single-leg and…
Sports training
Guide
Strength & conditioning for Table tennis
An evidence-based strength & conditioning guide for table tennis — rotational power and anti-rotation core, legs for stance and footwork, shoulder…
Sports training
Guide
Strength & conditioning for Golf
An evidence-based guide to strength and conditioning for golf — rotational power, hip mobility and hip–shoulder separation (the X-factor)…
Sports training
Guide
Strength & conditioning for Archery
An evidence-based strength & conditioning guide for archery — postural and scapular endurance, rotator-cuff and upper-back stability, trunk control…
Sports training
Guide
Strength & conditioning for Gymnastics
A deep, evidence-based strength & conditioning guide for gymnastics — relative (bodyweight) strength, straight-arm and static strength, core…
Sports training
Guide
Strength & conditioning for Rock climbing
A deep, evidence-based strength & conditioning guide for climbing — finger and grip strength progressed carefully around pulley risk, pulling and…
Sports training
Guide
Strength & conditioning for Cricket
A deep, evidence-based strength & conditioning guide for cricket — rotational power for batting and bowling, trunk and posterior-chain robustness…
Sports training
Guide
Strength & conditioning for Baseball & softball
An evidence-based strength & conditioning guide for baseball — rotational power for hitting and throwing, heavy lower-body force, rotator-cuff and…
Sports training
Guide
Strength & conditioning for Polo
An evidence-based strength & conditioning guide for polo — rotational power and an anti-rotation core, single-leg and adductor strength for the…
Sports training
Guide
Strength & conditioning for Fencing
A deep, evidence-based strength & conditioning guide for fencing — explosive single-leg and lunge strength, change-of-direction and reactive…
Sports training
Guide
Strength & conditioning for Walking
An evidence-based strength & conditioning guide for walking — lower-body and posterior-chain strength, single-leg balance and hip stability…
Sports training
Guide
Strength & conditioning for CrossFit
A deep, evidence-based strength & conditioning guide for CrossFit — building maximal strength, Olympic-lift power and gymnastics strength, training…
Sports training
Guide
Strength & conditioning for Gym classes
A deep, evidence-based strength-and-conditioning guide for group fitness classes — balanced full-body strength, movement quality, progressive…
Sports training
Guide
Strength & conditioning for Gym & home workouts
An evidence-based strength & conditioning guide to gym training — progressive overload, the big compound patterns (squat, hinge, push, pull, carry…
Nutrition
Guide
Carbohydrate loading
An evidence-based guide to carbohydrate loading — glycogen supercompensation, who actually benefits (continuous events over ~90 minutes) and who…
Nutrition
Guide
Hydration & electrolytes
A deep, evidence-based guide to hydrating for training and sport — how much fluid and when, measuring your own sweat rate, the keep-loss-under-2%…
Nutrition
Guide
Energy availability & RED-S
A deep, evidence-based guide to energy availability and RED-S — the ~30 vs ~45 kcal/kg fat-free-mass low-energy-availability thresholds, why…
Nutrition
Guide
Caffeine for performance
A deep, evidence-based guide to caffeine as a performance aid — the ~3–6 mg/kg dose taken around 45–60 minutes before, what it helps (endurance,…
Nutrition
Guide
How much protein do you need?
A deep, evidence-based guide to how much protein you actually need — daily targets in g/kg for active people and muscle-building (~1.4–2.0, up to…
Nutrition
Guide
Pre- & post-workout nutrition
A de-hyped, evidence-based guide to nutrition around training — pre-workout carbohydrate, whether to train fasted, when fuelling during a session…
Nutrition
Guide
Eating to build muscle
An evidence-based guide to the nutrition side of building muscle — a modest calorie surplus (~10–20% over maintenance), a realistic rate of gain…
Myths
Guide
The "eat clean to bulk" myth
Two opposite bulking myths, busted.
Nutrition
Guide
Body recomposition
An evidence-based guide to body recomposition — who can build muscle and lose fat at the same time, who finds it slow, and the conditions that…
Nutrition
Guide
Eating at maintenance
A deep, evidence-based guide to eating at maintenance — what maintenance calories are, why weight-stable eating is an underrated skill rather than…
Nutrition
Guide
Diet breaks & refeeds
A deep, evidence-based guide to diet breaks (a planned week or two at maintenance) and refeeds (short higher-carb days) — what the MATADOR and…
For women
Guide
Women, strength & fuelling
A supportive, evidence-based guide for women who lift: why heavy training won't make you 'bulky', how much protein you actually need (around…
For women
Guide
Nutrition across your cycle
A supportive, evidence-based guide to nutrition across the menstrual cycle — luteal-phase appetite and cravings, water-retention weight swings,…
Recovery
Guide
Recovery nutrition
A deep, evidence-based guide to recovery nutrition — refuelling glycogen with carbohydrate, protein for repair (per feed and per day), rehydration…
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