Ryan
Founder & Developer
Ryan is the founder and lead developer of Calvin. With a passion for both technology and health optimization, he built Calvin to solve his own frustrations with manual calorie tracking. He believes that AI can make healthy eating effortless.
Articles by Ryan
How to Calculate Your TDEE (And Why It Actually Matters)
Your TDEE — total daily energy expenditure — is the most important number in your diet. Here's how to calculate it accurately, why most calculators get it wrong, and how to use it.
Macro Tracking for Beginners: Protein, Carbs, and Fats Made Simple
A simple, no-nonsense guide to macro tracking for beginners. Learn what protein, carbs, and fats actually do, how to set targets, and how to log them without losing your mind.
What Is a Calorie Deficit and How Big Should Yours Be?
A calorie deficit is required for fat loss—but how big should it be? Learn the science, the math, and how to set the right deficit for your goals and lifestyle.
Walking for Weight Loss: The Underrated Exercise That Actually Works
Walking doesn't get the respect it deserves for weight loss. Here's the research on why it works, how much you need, and how to make it count.
High Volume Eating: How to Eat More Food While Cutting Calories
Eat huge portions while staying in a deficit. Learn the science of calorie density and discover 20+ high-volume food swaps to stay full on fewer calories.
Decision Fatigue and Food Choices: Why Your Eating Falls Apart at Night
If your eating is great during the day but falls apart in the evening, decision fatigue is likely part of the problem. Here's the science and how to fix it.
The Thermic Effect of Food Explained: How Your Body Burns Calories Digesting
Your body burns calories just digesting food—but protein, carbs, and fat are processed differently. Here's what TEF means for your diet and metabolism.
Starvation Mode: Myth vs. Reality (What Research Actually Shows)
Will eating too little make your body 'hold onto fat'? Here's what the Minnesota Starvation Experiment and modern research reveal about metabolic adaptation.
Should You Eat Back Exercise Calories? When It Makes Sense (And When It Doesn't)
Your watch says you burned 400 calories—should you eat them back? Here's when it makes sense, when it doesn't, and why fitness trackers get it wrong.
Does Eating Breakfast Boost Your Metabolism? What Research Shows
Will skipping breakfast slow your metabolism and cause weight gain? Here's what controlled studies actually show about breakfast and metabolic rate.
Why You Overeat on Weekends (And How to Fix It)
Research shows most people eat more on weekends. Here's why the 'Monday diet' phenomenon happens and practical strategies to stop sabotaging your progress.
Do Negative Calorie Foods Exist? The Truth About Celery and Other Claims
Do celery, cucumbers, and other foods burn more calories to digest than they contain? Here's the math on 'negative calorie' foods and what actually happens.
How to Track Alcohol Calories (Without Ruining Your Social Life)
Practical guide to tracking alcohol calories while maintaining a social life. Learn drink calorie counts, planning strategies, and how to make room in your budget.
How to Break a Weight Loss Plateau
Stuck at the same weight for weeks? This guide explains why weight loss stalls happen and provides a step-by-step troubleshooting approach to get the scale moving again.
The Most Underestimated Foods: Where Calorie Counting Goes Wrong
Discover the foods that sabotage calorie counts the most. From cooking oils to 'healthy' options, learn where hidden calories hide and how to account for them.
Can You 'Boost' Your Metabolism? The Truth
Green tea, spicy foods, meal timing—do any metabolism 'boosters' actually work? A science-based look at what really affects your metabolic rate and what's just marketing.
Does Eating Late at Night Cause Weight Gain? The Science
Separating fact from fiction on late-night eating and weight gain. What the research actually shows about meal timing, metabolism, and your waistline.
How to Estimate Portions When You Can't Measure
Master visual portion estimation for any situation. From restaurants to buffets to dinner parties—these techniques help you track calories accurately anywhere.
How to Track Homemade Recipes and Meals
Step-by-step guide to calculating and tracking calories in homemade recipes. Learn how to log home-cooked meals accurately without overcomplicating your process.
How to Count Calories Without a Food Scale
Learn practical methods for estimating calories without weighing food. Use hand portions, visual references, and smart strategies to track accurately—no scale required.
Why Your Weight Fluctuates Day to Day (And Why It's Normal)
Your weight can change 2-5 pounds overnight without any fat gain. Learn the science behind daily weight fluctuations and how to interpret your scale readings accurately.
How to Track Calories at Restaurants Without Being Weird
Learn practical strategies for estimating and tracking calories when dining out. No food scale required—just smart approaches that don't make you the awkward person at the table.
75 Calorie Counting Statistics You Need to Know (2026)
Comprehensive collection of 75 calorie counting statistics for 2026, including weight loss data, app usage trends, accuracy research, and behavioral insights. Updated monthly with the latest research.
Best Calorie Tracking Apps of 2026: Complete Comparison
Comprehensive comparison of the top calorie tracking apps in 2026. We tested MyFitnessPal, Lose It!, Cronometer, Calvin, and more to help you find the perfect fit for your goals.
The Complete Guide to Calorie Counting in 2026
Learn everything you need to know about calorie counting, from the basics of energy balance to practical tips for tracking your daily intake. Our comprehensive guide covers methods, tools, and expert advice.