Learn the science. Skip the noise.
52 short lessons written by a PhD in endocrinology — each one readable over a coffee, each one honest about what the evidence actually says. Start at lesson one or jump to what's bugging you.
Nutrition
Calories, macros, micros, and why diets fail — without the jargon.
What Is a Calorie, Anyway?
Every diet argument on the internet ends in the same place: the calorie. Here's what it actually is — and why it quietly rules every goal you have.
Carbs: Wrongly Convicted
Bread didn't ruin your diet. Here's what carbohydrates actually are, the real difference between complex and simple, and why neither one is evil.
Protein: Your Body's Building Crew
Animal or plant? Complete or incomplete? Here's how protein actually works in your body — explained without a single biochemistry flashback.
Fats: The Good, the Fine, and the Greasy
Fat isn't the enemy, and butter isn't a health food. A field guide to saturated, monounsaturated, and polyunsaturated fats — and what each one does.
Fiber: The Quiet Hero
No flavor to brag about, barely any calories, and it might be the most underrated thing on your plate. Meet fiber — and the 15–20% rule.
Vitamins in Five Minutes
Two families, thirteen vitamins, zero magic powders. The fastest useful tour of vitamins you'll ever take — plus the truth about megadosing vitamin C.
Deficit, Surplus, Maintenance
The three energy states your body can be in, which one matches your goal, and why a slight surplus builds muscle while a 20–30% deficit cuts fat.
The Weekend Effect
You were perfect Monday to Friday and the scale didn't move. You weren't cursed — you were ambushed. Let's do the weekend math together.
Muscle Is Your Engine
Your metabolism isn't broken — it might just be downsized. Why muscle sets your resting burn, and why losing it while dieting is the costliest mistake.
The Diet Hall of Shame
Moon diets, detox teas, tapeworms, and other crimes against biology. A funny-but-firm tour of why fad diets keep failing the same exam, decade after decade.
Exercise
Strength, cardio, energy systems — what each one builds and why it matters.
The Exercise Menu: Six Flavors of Fitness
Strength, power, hypertrophy, cardio, flexibility — what each one actually does, in plain words, and why a healthy body orders from the whole menu.
Strength Decoded: Lift Heavy, Rest Long
Powerlifters lounge between sets and bodybuilders never stop — both are right. The science of load, rest, and why getting strong makes getting big easier.
Strength Is Medicine
Better blood sugar, stronger bones, a protected heart, a sharper brain — what actually happens to your health when you lift weights twice a week.
Cardio Without the Confusion
HIIT, steady-state, easy movement — your heart has three gears and each has a job. What every gear does and how to mix them without picking a side.
Training for Performance
Power, pure strength, and strength that refuses to quit — how athletes train, why it quietly protects the heart long-term, and what fuels the engine.
ATP: The Body's Battery
Every muscle move runs on one tiny battery called ATP — and it only holds a few seconds of charge. Meet the explosive engine, and why creatine tops it up.
Glycolysis: The Carb Turbo
When the 10-second battery runs dry, carbs take over as your turbocharger — good for 30 seconds to two minutes. And no, the burn isn't 'lactic acid' the villain.
The Diesel Engine
Your all-day engine burns fat, sugar, protein and even ketones — with oxygen, inside tiny power plants called mitochondria. Why slow work burns more fat (but fewer calories).
Which Fuel, When?
Three engines, one body. The secret is the crossover: your intensity quietly decides the fuel mix. All three run in every workout — just in different ratios.
Vitamins & Minerals
Every vitamin and mineral that matters — what it does, where to get it.
Vitamin A: Eyes, Skin, and a Warning
The vitamin behind night vision and healthy skin — plus why the supplement aisle version is one you can actually overdose on. Read before you megadose.
Vitamin D: The Sunshine Hormone
Bones, immunity, mood — and a deficiency so common up north it's basically a winter tradition. Why food barely helps and what actually does.
Vitamin E: The Cell Bodyguard
Your built-in antioxidant — and a rare case where a handful of nuts beats anything in the supplement aisle. Here's why food wins this round.
Vitamin K: The Quiet One
It clots your blood and helps park calcium in your bones instead of your arteries — and almost nobody talks about it. Meet K1 and its underrated cousin K2.
B1 Thiamine: The Carb Spark
The first B vitamin turns the carbs on your plate into usable energy — and a few specific lifestyles can run it dangerously low. Here's who to watch.
B2 Riboflavin: The Neon Vitamin
An energy-production workhorse with a famous side effect: it can turn your pee a startling neon yellow. Totally harmless, weirdly fun. Here's the deal.
B3 Niacin: Energy and the Flush
An energy vitamin with a dramatic red-hot 'flush' and a once-famous cholesterol career that didn't quite pan out. The full, honest story.
B5 Pantothenic Acid: The Everywhere One
The B vitamin so common in food that going deficient is almost impossible. Its name literally means 'from everywhere.' The easiest lesson you'll read.
B6 Pyridoxine: Protein and Mood
The B vitamin that helps your body handle protein and build the brain chemicals behind your mood. Found in chicken, bananas, and potatoes — no fuss.
B7 Biotin: The Hair Hype Check
The marketing darling of every hair, skin, and nail gummy. Does biotin actually grow your hair? A straight answer to the supplement aisle's biggest promise.
B9 Folate: The Pregnancy MVP
It builds DNA, it's vital before and during pregnancy, and it's added to half the food on your shelf for one very good reason. Meet folate.
B12 Cobalamin: Nerves and Blood
Found in animal foods only, it keeps your nerves and red blood cells healthy. If you're vegan or over 50, this is the one B vitamin to take seriously.
Vitamin C: The Cold Myth Check
Does it really fight colds? A straight answer, plus the collagen job, the iron-absorption trick, and why mega-dosing is mostly a magic trick that doesn't work.
Magnesium: The Calm Mineral
Sleep, muscles, and 300+ jobs in your body run on this one mineral. Plus the glycinate vs citrate vs oxide question, settled in plain English.
Iron: Your Oxygen Delivery Crew
Iron carries oxygen through your blood. Women and endurance athletes run low — here's how to spot it, fix it with food, and why you shouldn't supplement blind.
Zinc: The Repair Foreman
Immune defense, wound healing, testosterone, and a famous oyster reputation. Here's what zinc really does, plus the copper balance most people miss.
Calcium: More Than Just Bones
Yes, calcium builds bones — but it also fires every muscle you own. Dairy and non-dairy sources, and why lifting weights is calcium's best friend.
Selenium: The Thyroid's Bodyguard
A tiny trace mineral that protects your thyroid. Brazil nuts are loaded with it — which is exactly why you eat one or two, not a handful.
Chromium: The Oversold Mineral
The supplement aisle sells chromium as a blood-sugar miracle. The evidence is far more modest. Here's the honest version, and where it lives in food.
Electrolytes: The Hydration Team
Sodium, potassium, and chloride run hydration, muscle cramps, and blood pressure as a team. Find out who actually needs electrolyte drinks — and who's wasting money.
The Vitamin & Mineral Cheat-Sheet
The whole track on one page. Every vitamin and mineral with what it does, where it lives, and who runs low — bookmark this and skip the supplement aisle.
Sleep
The third pillar: how sleep decides your hunger, hormones, and results.
Sleep: The Third Pillar
Training and nutrition get all the attention, but sleep is the third pillar holding up your results. Here's what your body actually does while you're out cold.
Sleepy and Hungry
Ever notice a bad night turns you into a snack monster the next day? It's not weakness — short sleep cranks your hunger hormones and hijacks your cravings.
Sleep and Your Hormones
Cortisol, growth hormone, testosterone, insulin sensitivity — one bad week of sleep measurably moves them all. Think of good sleep as free hormone therapy.
Sleep and Your Metabolism
Diet on too little sleep and your body makes a cruel swap: it holds onto fat and burns muscle instead. Here's why losing sleep means losing the wrong weight.
Menopause and Sleep
Perimenopause and menopause hit sleep hardest — hot flashes, night waking, and the sleep-to-hunger-to-weight-gain loop. Plus the practical levers that actually help.
Habits
The behaviour science that makes results permanent.
The Habit Loop: Why Your Brain Runs on Autopilot
Cue, routine, reward — the three-step loop your brain uses to automate almost half your day, and why willpower keeps losing the fight.
Make the Good Choice the Lazy Choice
Habit stacking, the two-minute version, and environment design — three tricks that build good habits without needing a personality transplant.
You Can't Delete a Habit (But You Can Rewire It)
Why quitting cold turkey usually fails, and the replacement trick that actually works: same cue, same reward, brand-new routine.
The Four Quiet Habits That Move the Scale
Fixed training slots, protein-anchored meals, a daily step floor, and a sleep schedule — the boring little habits that beat heroic 30-day challenges.
The Two-Week Cliff (And How to Survive It)
Why every new habit feels amazing for ten days and impossible by day eighteen — and the boring-middle survival kit that gets you to automatic.
Your Kitchen Is Making Decisions for You
What's visible gets eaten. How a twenty-minute rearrangement of your counter, fridge, and pantry quietly out-performs most meal plans.
Track It Like a Scientist, Not a Judge
Daily scale chaos, weekly trends, photos, training logs — and the only streak worth keeping. How to measure progress without the numbers bossing you around.