Nutrition guide
Weight-Cut Basics: What Every Fighter Should Know
Lose fat or drop water? How much is realistic, when do you start, and where is the line? A sober overview without extreme protocols.
3 min read · 17 September 2026 · updated 19 September 2026
“Making weight” is everyday life in combat sports – and one of the areas where the most nonsense gets passed around. This guide explains the basics: what happens during a cut, what's realistic, and where the sport ends.
Two completely different things
When fighters talk about “the cut”, they often mean two processes that have nothing to do with each other:
- Losing fat – over weeks, through a moderate calorie deficit. The weight stays off and performance is preserved if you do it right.
- Dropping water – in the last days before the weigh-in. The weight comes back after the weigh-in (that's the point). It costs performance if it's too much, and it's the part that can become dangerous.
Most problems arise because step 1 starts too late and step 2 then becomes too big.
How much fat loss is realistic?
As a guideline: about 0.5 to 1 percent of body weight per week. At 80 kg (176 lb) that's 400 to 800 g (roughly 1 to 1.75 lb). More is possible but costs muscle mass and training quality – and you need those on fight day more than the last two kilos.
Work backwards: if you're 6 kg over the limit eight weeks out, 4–5 kg are achievable through nutrition and the rest is water. If you're 10 kg over, the weight class is wrong.
What works in a deficit
- Protein high: roughly 2 g per kilogram of body weight per day, so muscle is preserved in the deficit.
- Fullness through volume: vegetables, lean protein sources, potatoes, oats. Recipes are under Cut.
- Carbohydrates around training: don't cut them, place them where they deliver performance.
- Weigh under the same conditions: in the morning, fasted, after the bathroom. The weekly average counts, not the single day.
The water part: keep it small
How much water you can drop in the last days depends on the weigh-in time, experience and supervision. With a same-day weigh-in the margin is very small; with a weigh-in the day before, somewhat larger.
What does make sense: reducing salt and high-fibre foods in the last days to cut water retention and gut content. For most adult fighters that yields one to two percent of body weight without performance suffering. Anything beyond that belongs under the guidance of an experienced coach or a doctor.
After the weigh-in
The cut isn't over until you've refuelled. How to eat and drink after the weigh-in is in the guide Hydration on Fight Day.
The honest summary
Start early, lose slowly, drop little water, refuel well. Anyone who has done that cleanly a few times knows their body and needs no tricks. Anyone who has overdone it hard once knows why.
Frequently asked questions
- How much weight can I safely lose before a fight?
- Through diet, about 0.5 to 1 percent of body weight per week. Water weight in the last days should stay in the low single digits of body weight, and only with a weigh-in the day before and experienced supervision. If you are more than 10 percent over the limit, the weight class is wrong.
- When should I start cutting weight for a fight?
- Six to eight weeks out for fat loss, so the deficit stays moderate and training quality holds. The last week is for reducing salt and fibre and refuelling after the weigh-in, not for losing fat.
- Are sauna suits and diuretics a safe way to make weight?
- No. Both dehydrate you, cost performance and have put fighters in hospital. Beyond Dojo does not describe those methods. Talk to a doctor before any cut.