The Macro Math Behind A Clean Cut

A cut is not about eating less until something happens. It is about setting three numbers, holding them honestly, and letting the trend do the work. Most people fail their cut because they guess — they slash calories on Monday, blow past them by Thursday, and call the whole thing broken. The math is simpler and kinder than that.

Here is the framework we program at Erasthetic. Set it once, log it every day, and adjust only when the trend tells you to.

Start With Your Deficit

Estimate maintenance from a week of honest logging — not a formula, your actual intake at stable weight. Then pull 15–20% below maintenance. That is the whole deficit. Bigger is not braver; it just costs you muscle and sleep.

For most people that lands between 400 and 600 calories a day, which trends to roughly 0.5–1% of bodyweight per week. Fast enough to see it in the mirror, slow enough to keep the strength you built.

Why not go steeper?

Aggressive deficits look great for two weeks and then collapse. Recovery tanks, training quality drops, and the scale weight you lose is increasingly the wrong kind. The clean cut is boring on purpose.

Protect The Muscle

Protein is the non-negotiable. Hold a floor of 0.8–1g per pound of bodyweight through the entire cut. This is the single biggest lever for keeping the physique you are trying to reveal.

• Protein first. Anchor every meal around it, then fill the rest of the day with carbs and fats to taste.
• Keep training heavy. A deficit is the wrong time to chase pumps. Keep the intensity that built the muscle so your body has a reason to keep it.
• Prioritize sleep. Under-recovered lifters lose more muscle on the exact same deficit. It is not optional.

Program The Refeed

A cut is a stress. Planned refeed days — bringing calories back to maintenance, mostly through carbs — take the edge off. They restore training performance, steady your hormones, and make the whole cut easier to hold.

One refeed a week is plenty when body fat is higher. As you get leaner, two can help. This is not a cheat day; it is a programmed tool with a number attached.

Read The Trend, Not The Day

Daily weight is noise — water, sodium, sleep, stress. Weigh in every morning, but only ever act on the weekly average. If the average has not moved in two to three weeks, drop maintenance by another 100–150 calories or add a little activity. That is the only adjustment you should be making.

Do this and the cut stops feeling like a fight. You set three numbers, you keep the chain unbroken, and the trend line bends exactly the way you meant it to.