Repast Engineering & Philosophy
Why we built an on-device constraint solver, why we refuse impossible profiles, and why traditional food diaries fail dieters.
GLP-1 Agonists and the Keto Protein Floor: Why Appetite Suppression Destroys Muscle
Semaglutide and tirzepatide cut hunger dramatically, but without an unyielding 1.6–2.2g/kg protein floor, up to 40% of lost weight comes from lean skeletal muscle. Here is the nutritional arithmetic of protecting lean mass.
Best Keto Apps for Beginners (2026 Ranked): Why Planning Beats Logging
We evaluated the 5 leading low-carb apps on database accuracy, net carb calculations, cognitive burden, and upfront constraint solving. Here is the definitive 2026 ranking.
Top 7 Keto Sweeteners Ranked: Glycemic Impact, GI Distress, and Safety
Not all zero-calorie sweeteners are keto-friendly. From allulose and monk fruit to the maltitol deception, here is the scientific ranking of 7 popular sugar substitutes.
The True Monthly Cost of Eating Keto: Dollar-for-Dollar Budget Breakdown
Is keto inherently more expensive than a standard carb-heavy diet? We tracked receipts across 30 days to calculate cost per gram of protein and where dieters waste money.
Exogenous Ketone Salts & Esters vs. Endogenous Ketosis: What the Research Shows
Drinking beta-hydroxybutyrate raises blood ketone levels instantly, but does it trigger fat loss or suppress it? Here is the metabolic truth behind ketone supplements.
Carnivore vs. Ketogenic Electrolyte Demands: The Zero-Carb Natriuresis Differential
Why going completely zero-carb accelerates sodium excretion twice as fast as moderate low-carb diets, and why mineral requirements change on pure animal-based nutrition.
Keto for Endurance Athletes: Zone 2 Fat Oxidation Rates and Glycogen Sparing
How keto-adapted athletes burn over 1.5 grams of fat per minute, doubling the historical ceiling of human lipid oxidation and sparing glycogen for the final sprint.
Metabolic Adaptation on Keto: How to Reverse Diet Without Gaining Body Fat
Exiting a prolonged caloric deficit without ballooning in weight requires systematic reverse dieting. Here is the clinical step-up protocol to restore your resting metabolic rate.
The Lean Mass Hyper-Responder Phenotype: Why LDL Soars in Lean Keto Dieters
Athletic and lean individuals who adopt keto often see LDL cholesterol triple while HDL rises and triglycerides plummet. Here is the science of the Lipid Energy Model.
The 3-Week Keto Plateau: Why Fat Loss Stalls When Water Loss Ends
You lost 8 pounds in your first fourteen days, and then the scale froze for two weeks straight. You have not failed; your glycogen reserves emptied and cellular water is rebalancing.
Why Calorie Logging Fails: The Metabolic Friction of Food Diaries
Food logging apps assume energy balance is an accounting ledger. In reality, logging friction, metabolic adaptation, and label inaccuracies make manual food diaries counterproductive.
Why Keto Meal Kits Disappoint: The Hidden Economics of Box Deliveries
Subscription meal boxes promise effortless low-carb eating, but deliver hidden starches, enormous plastic packaging waste, and unit costs exceeding fine dining.
The Refrigerator Graveyard: Solving the $1,800/Year Leftover Crisis
The bottom crisper drawer is where good intentions go to decompose. Here is the mathematical framework for allocating multi-portion meals so zero food is thrown away.
Intermittent Fasting & Ketosis: How Time-Restricted Eating Compresses Macros
Compressing your daily keto nutrition into an 8-hour or 6-hour feeding window amplifies autophagy and insulin sensitivity, but requires precision protein density.
Seed Oils vs. Animal Fats: Thermal Stability and Peroxidation in Low-Carb Cooking
Why high-temperature searing with soybean or canola oil generates cytotoxic lipid peroxides, and why tallow, ghee, and coconut oil protect cellular membranes.
The Dawn Phenomenon: Why Morning Fasting Blood Glucose Spikes in Ketosis
You have eaten zero carbs for weeks, yet your morning fingerstick blood glucose reads 105 mg/dL. Here is why physiologic insulin resistance and morning cortisol cause waking spikes.
The Keto Flu Sodium-Potassium Protocol: Remedying Acute Natriuresis
Brain fog, throbbing headaches, and muscle cramps during week one are entirely preventable. Here is the exact milligram replenishment protocol for your first 14 days.
Targeted vs. Cyclical Ketogenic Diets: Glycogen Replenishment for Athletes
Standard keto works wonders for aerobic endurance, but explosive glycolytic strength training often demands strategic carbohydrates. Comparing TKD and CKD approaches.
The Cortisol-Insulin Axis: Why Chronic Stress Halts Hepatic Ketogenesis
You are eating 18 grams of net carbs, yet your ketone strips remain pale and your weight will not budge. How sleep deprivation and work stress elevate liver gluconeogenesis.
Visceral vs. Subcutaneous Fat: How Ketosis Selectively Mobilizes Organ Fat
Not all body fat is created equal. Why the deep abdominal fat surrounding your liver and pancreas is the most dangerous, and why keto mobilizes it first.
Eliminating the 2 PM Food Coma: The Neurochemistry of Postprandial Energy
Why standard lunches cause irresistible afternoon drowsiness, and how low-carb meal structures keep cognitive energy razor-sharp throughout the entire workday.
USDA Nutrition Labels Have a Legal 20% Error Margin: Why Perfect Tracking Is an Illusion
The FDA permits food manufacturers a 20% margin of error on nutrition labels. Here is why logging macros down to the gram gives a false sense of security.
Why Barcode Scanners Calculate Net Carbs Incorrectly: The Database Flaw
Most popular tracking apps rely on crowdsourced barcode databases full of typos, missing polyols, and gross calculation errors. Trusting them will quietly break your ketosis.
The 61 Aliases of Sugar: How Food Processors Sneak Carbs Past You
From maltodextrin and dextrose to evaporated cane juice, commercial food manufacturers use dozens of deceptive names to hide high-glycemic carbohydrates in 'healthy' foods.
The Maltitol Trap: Why 'Sugar-Free' Keto Bars Spike Blood Glucose
Maltitol has a glycemic index nearly identical to table sugar, yet brands deduct 100% of it to claim single-digit net carbs. Here is the math of the ultimate keto sweetener fraud.
5-Minute High-Protein Keto Breakfasts When You Have Zero Time
No time to fry bacon and scramble eggs on busy weekday mornings? Three zero-cook and 3-minute protocols that deliver 35g of protein under 3g net carbs.
Magnesium Glycinate vs. Citrate on Keto: Solving Nighttime Muscle Cramps
Waking up at 3 AM with a locked calf muscle is a classic sign of magnesium depletion. Why chemical chelation matters and which formulation to buy.
Why Repast Refuses Impossible Meal Plans: The Mathematics of Feasibility
Most apps cheerfully accept contradictory inputs: 15g net carbs, 160g protein, vegan, 1,200 calories. Repast does something different: it refuses to generate impossible plans.
Stop deciding what to cook every day.
Get your week decided under your carb ceiling in two minutes. On-device only.
Download Repast for iPhone