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

AI macro calcualtor vs IIFYM TDEE calcualtor for flexible dieting fat loss

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. […]

The Perfect Macro Ratio – You’ve been lied to

Macro Ratios Are Outdated—and What You Need Instead When it comes to nutrition, there’s one myth that refuses to die: the perfect Macro Ratio. You’ve probably heard it before: eat 40% carbs, 40% protein, 20% fat, or some other formula that’s marketed as the perfect Macro Ratio for your goals. Here’s the problem. These ratios […]

The Gut-Brain Axis

the gut brain axis

Gut feeling, gut instinct, go with your gut… We’ve all heard these sayings, but where and why did they originate? The gut-brain axis is the connection between your gut and your brain, which can be seen as a communication network between the two. “The gut-brain axis (GBA) consists of bidirectional communication between the central and […]

A Focus On Gluten

a focus on gluten

Dining Out, If It Fits Your Macros Style You’ve just been invited out to dinner with your friends on a Friday night and immediately feel some excitement at the thought. Soon after, however, anxiety sets in. What about your macros? You do after all have fat loss goals! The great part about IIFYM and the […]

The #1 Way to Improve Your Gut Health

freshly squeezed orange juice

  Stop consuming foods and drinks that weren’t designed to be eaten. Firstly, the ingredients on the back of a food label should be the ingredients that you intend on eating. For example, if a snack bar contains oats, dates, cocoa, etc. all of these you would be happy to eat. When the list starts […]

Simplifying Probiotics & Prebiotics

simplifying probiotics prebiotics

When it comes to your health, both pre and probiotics have been under the spotlight. Though they’ve similar-sounding names, they play different, important roles in your health. Probiotics are good gut bacteria, and prebiotics are fibre that feed these good bacteria. You need the best probiotics and natural probiotics for a balanced gut. Prebiotics feed […]

What’s The Best Protein For You? – Part 1

What's the best protein for you? Part 1

The best source of protein really does depend on what you want to get out of it! Different options can work best for different people with different focuses. 🧪 Bioavailability This is the extent to which we utilize the amino acids consumed in our meals for functional uses. Whey protein, eggs and fish have the […]

The Blurring Line Between Fitness and Life Coaching

blurring line fitness life coaching

The Rise of the Life Coach An American professor called Anthony Klotz coined the term ‘The Great Resignation’ to explain the ongoing trend (in the U.S. initially) of employees voluntarily leaving their jobs, from spring 2021 to the present, in response to the COVID-19 pandemic. It has been described as a sort of ‘workers’ revolution’ against bad […]

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