How to use your mistakes to lose weight with macros

Macro dieting mistakes

Tracking Macros After a Binge: Why I Tell My Clients to Log the Bad Days By Anthony Collova, founder of IIFYM.com and creator of the original IIFYM macro calculator. Written from 15 years of one-on-one macro coaching. Reviewed for accuracy and updated for 2026. One of the first things I ask my clients to do […]

12 Reasons to fire your weight loss coach

When to fire your weight loss coach

Macro Coaching 12 Nutrition Coach Red Flags: When to Fire Your Macro or Nutrition Coach If your nutrition coach blames you when progress stops, dismisses menopause, immediately cuts your calories or carbs, gives you generic macros, or has no plan for what happens after weight loss, it may be time to find a better coach. […]

How to Calculate Your Macros for Weight Loss

Plate of balanced macros showing protein, carbs, and fat portions for weight loss

Updated: June 7, 2026 · By Anthony Collova, founder of IIFYM.com To calculate your macros for weight loss, find your total daily energy expenditure (TDEE), subtract a deficit of 15 to 20 percent, then divide the remaining calories into protein at 0.8 to 1 gram per pound of body weight, fat at about 25 percent […]

ChatGPT Macro Calculator: Why AI Gets Your Numbers Wrong (And What to Use Instead)

A person standing behind a large smartphone display showing a ChatGPT conversation about macro counts. The background is black with floating red question marks and warning icons. Text above reads "ChatGPT Macro Calculator: Why AI Gets Your Numbers Wrong."

By Anthony Collova  | Founder, IIFYM.com  | March 4, 2026 ChatGPT vs. Macro Calculators: What’s Actually Worth Trusting? People treat ChatGPT answers like they came from a doctor. I’ve watched clients follow AI-generated macros for weeks without questioning a single number, because it answered in full sentences and sounded confident. That confidence is the problem. […]

Intermittent Fasting And IIFYM: What New Research Says

intermittent-fasting-16-8-diet-plan.webp.26-3-2026

I’ve coached thousands of people through fat loss over the years, and one pattern I keep seeing is this: the best results come when structure meets flexibility. That’s why I started combining intermittent fasting and IIFYM and why it changed everything for me and my clients. Intermittent fasting gives you control over when you eat. […]

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