Flexible Dieting (IIFYM): Eat What You Like
Flexible dieting (IIFYM) says no food is banned — as long as it fits your daily calories and macros. It’s freeing, with one caveat.
How it works
You set targets for calories and protein, then eat any foods that fit them. A square of chocolate or some rice isn’t "bad" — it’s just numbers on your day. This kills the guilt-and-binge cycle that rigid diets cause.
The one rule
Follow the 80/20 principle: ~80% of your food from nutritious whole foods (for fibre, vitamins and fullness), ~20% for whatever you enjoy. All-treats-that-fit will leave you hungry and undernourished even at the right calories.
Quick answers
Can I eat anything on IIFYM?
Within your calories and protein, yes — but keep ~80% whole foods for health and fullness.
Is flexible dieting good for beginners?
Yes — it teaches portions and prevents the restrict-binge cycle, making dieting sustainable.
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